./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-barrier.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f52861b3-84f0-4c64-b179-addac9211730/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f52861b3-84f0-4c64-b179-addac9211730/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f52861b3-84f0-4c64-b179-addac9211730/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f52861b3-84f0-4c64-b179-addac9211730/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/parallel-barrier.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f52861b3-84f0-4c64-b179-addac9211730/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f52861b3-84f0-4c64-b179-addac9211730/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 22b51332425cd14048935a20a73abea0065b1633fac56d6d6be511ab67585236 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:27:01,244 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:27:01,246 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:27:01,279 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:27:01,279 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:27:01,287 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:27:01,289 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:27:01,291 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:27:01,294 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:27:01,295 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:27:01,296 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:27:01,298 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:27:01,298 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:27:01,302 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:27:01,305 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:27:01,308 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:27:01,312 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:27:01,313 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:27:01,316 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:27:01,324 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:27:01,326 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:27:01,332 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:27:01,334 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:27:01,335 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:27:01,339 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:27:01,339 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:27:01,340 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:27:01,341 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:27:01,342 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:27:01,343 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:27:01,344 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:27:01,345 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:27:01,346 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:27:01,347 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:27:01,349 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:27:01,349 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:27:01,350 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:27:01,351 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:27:01,351 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:27:01,352 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:27:01,353 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:27:01,354 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f52861b3-84f0-4c64-b179-addac9211730/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:27:01,382 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:27:01,382 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:27:01,383 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:27:01,384 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:27:01,384 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:27:01,385 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:27:01,385 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:27:01,385 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:27:01,386 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:27:01,386 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:27:01,387 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:27:01,387 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:27:01,387 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:27:01,388 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:27:01,388 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:27:01,389 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:27:01,390 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:27:01,390 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:27:01,390 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:27:01,391 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:27:01,391 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:27:01,392 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:27:01,392 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:27:01,392 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:27:01,393 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:27:01,393 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:27:01,394 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:27:01,394 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:27:01,395 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:27:01,395 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:27:01,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:27:01,396 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:27:01,396 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:27:01,396 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:27:01,396 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:27:01,397 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:27:01,397 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:27:01,397 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:27:01,397 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:27:01,398 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f52861b3-84f0-4c64-b179-addac9211730/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f52861b3-84f0-4c64-b179-addac9211730/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22b51332425cd14048935a20a73abea0065b1633fac56d6d6be511ab67585236 [2021-11-07 01:27:01,657 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:27:01,679 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:27:01,681 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:27:01,683 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:27:01,683 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:27:01,684 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f52861b3-84f0-4c64-b179-addac9211730/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/weaver/parallel-barrier.wvr.c [2021-11-07 01:27:01,767 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f52861b3-84f0-4c64-b179-addac9211730/bin/utaipan-UUZaoUuFF8/data/739b123dd/afb0c7d1070f4c78a877a86a83bd2776/FLAG2129f94b0 [2021-11-07 01:27:02,206 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:27:02,206 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f52861b3-84f0-4c64-b179-addac9211730/sv-benchmarks/c/weaver/parallel-barrier.wvr.c [2021-11-07 01:27:02,232 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f52861b3-84f0-4c64-b179-addac9211730/bin/utaipan-UUZaoUuFF8/data/739b123dd/afb0c7d1070f4c78a877a86a83bd2776/FLAG2129f94b0 [2021-11-07 01:27:02,608 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f52861b3-84f0-4c64-b179-addac9211730/bin/utaipan-UUZaoUuFF8/data/739b123dd/afb0c7d1070f4c78a877a86a83bd2776 [2021-11-07 01:27:02,611 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:27:02,613 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:27:02,614 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:27:02,615 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:27:02,635 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:27:02,636 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:27:02" (1/1) ... [2021-11-07 01:27:02,637 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40d3d2bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:27:02, skipping insertion in model container [2021-11-07 01:27:02,637 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:27:02" (1/1) ... [2021-11-07 01:27:02,645 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:27:02,685 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:27:02,977 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f52861b3-84f0-4c64-b179-addac9211730/sv-benchmarks/c/weaver/parallel-barrier.wvr.c[4722,4735] [2021-11-07 01:27:02,981 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:27:03,000 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:27:03,053 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f52861b3-84f0-4c64-b179-addac9211730/sv-benchmarks/c/weaver/parallel-barrier.wvr.c[4722,4735] [2021-11-07 01:27:03,059 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:27:03,080 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:27:03,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:27:03 WrapperNode [2021-11-07 01:27:03,081 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:27:03,082 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:27:03,082 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:27:03,082 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:27:03,090 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:27:03" (1/1) ... [2021-11-07 01:27:03,115 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:27:03" (1/1) ... [2021-11-07 01:27:03,156 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:27:03,156 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:27:03,157 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:27:03,157 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:27:03,166 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:27:03" (1/1) ... [2021-11-07 01:27:03,166 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:27:03" (1/1) ... [2021-11-07 01:27:03,170 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:27:03" (1/1) ... [2021-11-07 01:27:03,170 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:27:03" (1/1) ... [2021-11-07 01:27:03,179 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:27:03" (1/1) ... [2021-11-07 01:27:03,181 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:27:03" (1/1) ... [2021-11-07 01:27:03,184 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:27:03" (1/1) ... [2021-11-07 01:27:03,187 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:27:03,188 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:27:03,188 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:27:03,189 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:27:03,190 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:27:03" (1/1) ... [2021-11-07 01:27:03,201 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:27:03,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f52861b3-84f0-4c64-b179-addac9211730/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:27:03,224 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f52861b3-84f0-4c64-b179-addac9211730/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:27:03,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f52861b3-84f0-4c64-b179-addac9211730/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:27:03,260 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-07 01:27:03,260 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-07 01:27:03,260 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-07 01:27:03,260 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-07 01:27:03,260 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-11-07 01:27:03,261 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-11-07 01:27:03,261 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-11-07 01:27:03,261 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-11-07 01:27:03,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 01:27:03,261 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2021-11-07 01:27:03,262 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2021-11-07 01:27:03,262 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2021-11-07 01:27:03,262 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2021-11-07 01:27:03,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:27:03,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 01:27:03,263 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-07 01:27:03,263 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-07 01:27:03,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:27:03,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:27:03,263 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 01:27:03,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:27:03,265 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-07 01:27:03,947 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:27:03,977 INFO L299 CfgBuilder]: Removed 20 assume(true) statements. [2021-11-07 01:27:03,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:27:03 BoogieIcfgContainer [2021-11-07 01:27:03,980 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:27:03,982 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:27:03,983 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:27:04,003 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:27:04,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:27:02" (1/3) ... [2021-11-07 01:27:04,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42b966a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:27:04, skipping insertion in model container [2021-11-07 01:27:04,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:27:03" (2/3) ... [2021-11-07 01:27:04,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42b966a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:27:04, skipping insertion in model container [2021-11-07 01:27:04,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:27:03" (3/3) ... [2021-11-07 01:27:04,007 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-barrier.wvr.c [2021-11-07 01:27:04,012 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-07 01:27:04,013 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:27:04,013 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 01:27:04,013 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-07 01:27:04,101 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~#t2~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,101 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~#t2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,102 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~#t2~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,102 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~#t2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,102 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~#t3~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,102 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~#t3~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,103 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~#t3~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,103 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~#t3~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,104 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,104 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,104 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,104 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,104 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,104 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,105 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,105 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,105 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,105 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,106 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,106 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,106 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~pre3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,106 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~pre3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,106 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~#t2~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,107 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~pre3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,107 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~#t2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,107 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~#t2~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,107 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~pre3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,107 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~#t2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,107 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~pre3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,108 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~pre3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,108 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,108 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,108 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~pre5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,108 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~pre5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,109 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~#t3~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,109 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~pre5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,109 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~#t3~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,109 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~#t3~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,109 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~pre5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,110 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~#t3~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,110 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~pre5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,110 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~pre5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,110 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,111 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,111 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~#t2~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,111 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~#t2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,111 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,111 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~#t2~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,111 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~#t2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,112 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,112 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,113 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,113 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~#t3~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,113 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~#t3~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,113 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,113 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~#t3~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,114 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~#t3~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,114 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,114 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,114 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,114 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,115 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,115 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,115 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,115 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~#t2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,116 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~#t2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,116 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~#t2~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,116 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~#t2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,116 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~#t2~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,116 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~#t2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,117 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~#t3~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,117 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~#t3~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,117 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~#t3~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,117 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~#t3~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,117 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~#t3~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,118 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~#t3~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,118 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,118 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork5_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,119 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,119 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork5_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,119 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,119 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,120 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,120 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,120 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,121 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,121 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,121 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,121 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,122 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,122 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,122 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,123 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~#t5~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,123 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~#t5~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,123 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~#t5~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,123 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~#t5~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,124 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~#t6~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,124 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~#t6~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,124 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~#t6~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,124 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~#t6~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,125 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,125 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,125 WARN L322 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,125 WARN L322 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,125 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,126 WARN L322 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,126 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,126 WARN L322 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,126 WARN L322 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,126 WARN L322 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,127 WARN L322 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,127 WARN L322 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,127 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~pre9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,127 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~pre9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,128 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~#t5~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,128 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~pre9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,128 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~#t5~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,128 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~#t5~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,128 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~pre9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,128 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~#t5~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,129 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~pre9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,129 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~pre9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,129 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~nondet10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,129 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~nondet10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,129 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~pre11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,130 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~pre11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,130 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~#t6~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,130 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~pre11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,130 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~#t6~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,131 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~#t6~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,131 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~pre11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,131 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~#t6~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,131 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~pre11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,131 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~pre11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,132 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~nondet12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,132 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~nondet12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,132 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~#t5~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,132 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~#t5~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,132 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,133 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~#t5~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,133 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~#t5~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,133 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,133 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,133 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,134 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~#t6~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,134 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~#t6~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,134 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,134 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~#t6~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,134 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~#t6~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,134 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,135 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,135 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,135 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,135 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,136 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,136 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,136 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~#t5~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,136 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~#t5~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,136 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~#t5~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,137 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~#t5~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,137 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~#t5~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,137 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~#t5~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,137 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~#t6~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,137 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~#t6~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,138 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~#t6~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,138 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~#t6~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,138 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~#t6~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,138 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~#t6~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,139 WARN L322 ript$VariableManager]: TermVariabe thread5Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,139 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,139 WARN L322 ript$VariableManager]: TermVariabe thread5Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,139 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,140 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,140 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,140 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,140 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,141 WARN L322 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork4_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,141 WARN L322 ript$VariableManager]: TermVariabe thread6Thread1of1ForFork4_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,141 WARN L322 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork4_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,141 WARN L322 ript$VariableManager]: TermVariabe thread6Thread1of1ForFork4_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,142 WARN L322 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork4_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,142 WARN L322 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork4_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,142 WARN L322 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork4_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,142 WARN L322 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork4_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,145 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,146 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,146 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,146 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~#t2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,146 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~#t2~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,147 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,147 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,147 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~#t3~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,147 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~pre3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,147 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,147 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,148 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,148 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~pre5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,148 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~#t3~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,156 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,156 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,158 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,158 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,164 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,164 WARN L322 ript$VariableManager]: TermVariabe thread5Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,165 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,165 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,167 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~nondet10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,167 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~nondet12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,167 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~pre9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,168 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~#t5~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,168 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~#t5~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,168 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~#t6~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,171 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,172 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~#t6~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,172 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~pre11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,172 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,173 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,173 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,173 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,173 WARN L322 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,176 WARN L322 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork4_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,177 WARN L322 ript$VariableManager]: TermVariabe thread6Thread1of1ForFork4_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,177 WARN L322 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork4_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,177 WARN L322 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork4_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,181 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork5_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,182 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,183 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,183 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,184 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork5_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,186 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,186 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,187 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork5_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,188 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,189 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,189 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,189 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,191 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,191 WARN L322 ript$VariableManager]: TermVariabe thread5Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,192 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,192 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,194 WARN L322 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork4_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,195 WARN L322 ript$VariableManager]: TermVariabe thread6Thread1of1ForFork4_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,195 WARN L322 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork4_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,195 WARN L322 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork4_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 01:27:04,260 INFO L148 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2021-11-07 01:27:04,303 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:27:04,310 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 01:27:04,311 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-11-07 01:27:04,330 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-07 01:27:04,340 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 234 places, 223 transitions, 518 flow [2021-11-07 01:27:04,343 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 234 places, 223 transitions, 518 flow [2021-11-07 01:27:04,345 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 234 places, 223 transitions, 518 flow [2021-11-07 01:27:04,442 INFO L129 PetriNetUnfolder]: 8/195 cut-off events. [2021-11-07 01:27:04,442 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-11-07 01:27:04,448 INFO L84 FinitePrefix]: Finished finitePrefix Result has 224 conditions, 195 events. 8/195 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 232 event pairs, 0 based on Foata normal form. 0/186 useless extension candidates. Maximal degree in co-relation 168. Up to 3 conditions per place. [2021-11-07 01:27:04,472 INFO L116 LiptonReduction]: Number of co-enabled transitions 7268 [2021-11-07 01:27:10,692 INFO L131 LiptonReduction]: Checked pairs total: 42528 [2021-11-07 01:27:10,692 INFO L133 LiptonReduction]: Total number of compositions: 157 [2021-11-07 01:27:10,716 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 99 places, 85 transitions, 242 flow [2021-11-07 01:27:11,821 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 18624 states, 18623 states have (on average 4.339526392095795) internal successors, (80815), 18623 states have internal predecessors, (80815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:11,874 INFO L276 IsEmpty]: Start isEmpty. Operand has 18624 states, 18623 states have (on average 4.339526392095795) internal successors, (80815), 18623 states have internal predecessors, (80815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:12,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-07 01:27:12,192 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:27:12,193 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:27:12,193 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATION, thread1Err5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION (and 7 more)] === [2021-11-07 01:27:12,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:27:12,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1418248193, now seen corresponding path program 1 times [2021-11-07 01:27:12,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:27:12,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116406725] [2021-11-07 01:27:12,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:27:12,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:27:12,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:27:12,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:27:12,557 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:27:12,557 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116406725] [2021-11-07 01:27:12,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116406725] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:27:12,559 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:27:12,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 01:27:12,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187929115] [2021-11-07 01:27:12,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:27:12,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:27:12,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:27:12,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:27:12,620 INFO L87 Difference]: Start difference. First operand has 18624 states, 18623 states have (on average 4.339526392095795) internal successors, (80815), 18623 states have internal predecessors, (80815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:13,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:27:13,210 INFO L93 Difference]: Finished difference Result 18624 states and 80623 transitions. [2021-11-07 01:27:13,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:27:13,212 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-07 01:27:13,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:27:13,695 INFO L225 Difference]: With dead ends: 18624 [2021-11-07 01:27:13,695 INFO L226 Difference]: Without dead ends: 18624 [2021-11-07 01:27:13,697 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:27:13,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18624 states. [2021-11-07 01:27:14,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18624 to 18624. [2021-11-07 01:27:14,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18624 states, 18623 states have (on average 4.329216560167535) internal successors, (80623), 18623 states have internal predecessors, (80623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:14,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18624 states to 18624 states and 80623 transitions. [2021-11-07 01:27:14,958 INFO L78 Accepts]: Start accepts. Automaton has 18624 states and 80623 transitions. Word has length 59 [2021-11-07 01:27:14,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:27:14,960 INFO L470 AbstractCegarLoop]: Abstraction has 18624 states and 80623 transitions. [2021-11-07 01:27:14,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:14,962 INFO L276 IsEmpty]: Start isEmpty. Operand 18624 states and 80623 transitions. [2021-11-07 01:27:15,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 01:27:15,289 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:27:15,289 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:27:15,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 01:27:15,290 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATION, thread1Err5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION (and 7 more)] === [2021-11-07 01:27:15,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:27:15,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1765266379, now seen corresponding path program 1 times [2021-11-07 01:27:15,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:27:15,291 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269685336] [2021-11-07 01:27:15,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:27:15,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:27:15,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:27:15,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:27:15,838 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:27:15,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269685336] [2021-11-07 01:27:15,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269685336] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:27:15,839 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:27:15,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 01:27:15,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274269593] [2021-11-07 01:27:15,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:27:15,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:27:15,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:27:15,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:27:15,844 INFO L87 Difference]: Start difference. First operand 18624 states and 80623 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:16,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:27:16,222 INFO L93 Difference]: Finished difference Result 14356 states and 60649 transitions. [2021-11-07 01:27:16,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:27:16,223 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 01:27:16,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:27:16,321 INFO L225 Difference]: With dead ends: 14356 [2021-11-07 01:27:16,322 INFO L226 Difference]: Without dead ends: 14356 [2021-11-07 01:27:16,322 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:27:16,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14356 states. [2021-11-07 01:27:17,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14356 to 14356. [2021-11-07 01:27:17,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14356 states, 14355 states have (on average 4.224939045628701) internal successors, (60649), 14355 states have internal predecessors, (60649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:17,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14356 states to 14356 states and 60649 transitions. [2021-11-07 01:27:17,357 INFO L78 Accepts]: Start accepts. Automaton has 14356 states and 60649 transitions. Word has length 63 [2021-11-07 01:27:17,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:27:17,359 INFO L470 AbstractCegarLoop]: Abstraction has 14356 states and 60649 transitions. [2021-11-07 01:27:17,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:17,360 INFO L276 IsEmpty]: Start isEmpty. Operand 14356 states and 60649 transitions. [2021-11-07 01:27:17,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 01:27:17,458 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:27:17,459 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:27:17,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 01:27:17,460 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATION, thread1Err5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION (and 7 more)] === [2021-11-07 01:27:17,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:27:17,460 INFO L85 PathProgramCache]: Analyzing trace with hash -2000605913, now seen corresponding path program 2 times [2021-11-07 01:27:17,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:27:17,461 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355100913] [2021-11-07 01:27:17,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:27:17,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:27:17,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:27:17,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:27:17,675 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:27:17,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355100913] [2021-11-07 01:27:17,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355100913] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:27:17,675 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:27:17,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 01:27:17,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037451895] [2021-11-07 01:27:17,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:27:17,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:27:17,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:27:17,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:27:17,677 INFO L87 Difference]: Start difference. First operand 14356 states and 60649 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:17,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:27:17,916 INFO L93 Difference]: Finished difference Result 11100 states and 45703 transitions. [2021-11-07 01:27:17,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:27:17,917 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 01:27:17,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:27:17,990 INFO L225 Difference]: With dead ends: 11100 [2021-11-07 01:27:17,990 INFO L226 Difference]: Without dead ends: 11100 [2021-11-07 01:27:17,991 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:27:18,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11100 states. [2021-11-07 01:27:18,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11100 to 11100. [2021-11-07 01:27:18,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11100 states, 11099 states have (on average 4.117758356608704) internal successors, (45703), 11099 states have internal predecessors, (45703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:18,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11100 states to 11100 states and 45703 transitions. [2021-11-07 01:27:18,553 INFO L78 Accepts]: Start accepts. Automaton has 11100 states and 45703 transitions. Word has length 63 [2021-11-07 01:27:18,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:27:18,555 INFO L470 AbstractCegarLoop]: Abstraction has 11100 states and 45703 transitions. [2021-11-07 01:27:18,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:18,555 INFO L276 IsEmpty]: Start isEmpty. Operand 11100 states and 45703 transitions. [2021-11-07 01:27:18,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 01:27:18,600 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:27:18,600 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:27:18,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 01:27:18,601 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATION, thread1Err5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION (and 7 more)] === [2021-11-07 01:27:18,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:27:18,602 INFO L85 PathProgramCache]: Analyzing trace with hash -596790169, now seen corresponding path program 3 times [2021-11-07 01:27:18,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:27:18,602 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948270097] [2021-11-07 01:27:18,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:27:18,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:27:18,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:27:19,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:27:19,707 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:27:19,707 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948270097] [2021-11-07 01:27:19,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948270097] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:27:19,708 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:27:19,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-07 01:27:19,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336358056] [2021-11-07 01:27:19,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-07 01:27:19,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:27:19,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-07 01:27:19,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=455, Unknown=0, NotChecked=0, Total=506 [2021-11-07 01:27:19,710 INFO L87 Difference]: Start difference. First operand 11100 states and 45703 transitions. Second operand has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:22,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:27:22,489 INFO L93 Difference]: Finished difference Result 16359 states and 66359 transitions. [2021-11-07 01:27:22,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-11-07 01:27:22,490 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 01:27:22,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:27:22,588 INFO L225 Difference]: With dead ends: 16359 [2021-11-07 01:27:22,588 INFO L226 Difference]: Without dead ends: 16142 [2021-11-07 01:27:22,591 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1183 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=387, Invalid=4169, Unknown=0, NotChecked=0, Total=4556 [2021-11-07 01:27:22,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16142 states. [2021-11-07 01:27:23,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16142 to 11492. [2021-11-07 01:27:23,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11492 states, 11491 states have (on average 4.111652597685145) internal successors, (47247), 11491 states have internal predecessors, (47247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:23,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11492 states to 11492 states and 47247 transitions. [2021-11-07 01:27:23,201 INFO L78 Accepts]: Start accepts. Automaton has 11492 states and 47247 transitions. Word has length 63 [2021-11-07 01:27:23,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:27:23,202 INFO L470 AbstractCegarLoop]: Abstraction has 11492 states and 47247 transitions. [2021-11-07 01:27:23,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:23,203 INFO L276 IsEmpty]: Start isEmpty. Operand 11492 states and 47247 transitions. [2021-11-07 01:27:23,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 01:27:23,235 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:27:23,236 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:27:23,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 01:27:23,236 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATION, thread1Err5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION (and 7 more)] === [2021-11-07 01:27:23,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:27:23,238 INFO L85 PathProgramCache]: Analyzing trace with hash 822957579, now seen corresponding path program 4 times [2021-11-07 01:27:23,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:27:23,239 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23723188] [2021-11-07 01:27:23,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:27:23,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:27:23,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:27:24,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:27:24,054 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:27:24,055 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23723188] [2021-11-07 01:27:24,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23723188] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:27:24,055 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:27:24,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-07 01:27:24,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498158234] [2021-11-07 01:27:24,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-07 01:27:24,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:27:24,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-07 01:27:24,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=455, Unknown=0, NotChecked=0, Total=506 [2021-11-07 01:27:24,057 INFO L87 Difference]: Start difference. First operand 11492 states and 47247 transitions. Second operand has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:28,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:27:28,040 INFO L93 Difference]: Finished difference Result 17663 states and 72098 transitions. [2021-11-07 01:27:28,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-11-07 01:27:28,040 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 01:27:28,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:27:28,131 INFO L225 Difference]: With dead ends: 17663 [2021-11-07 01:27:28,131 INFO L226 Difference]: Without dead ends: 17362 [2021-11-07 01:27:28,134 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2363 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=582, Invalid=6900, Unknown=0, NotChecked=0, Total=7482 [2021-11-07 01:27:28,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17362 states. [2021-11-07 01:27:28,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17362 to 11472. [2021-11-07 01:27:28,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11472 states, 11471 states have (on average 4.111847267021184) internal successors, (47167), 11471 states have internal predecessors, (47167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:28,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11472 states to 11472 states and 47167 transitions. [2021-11-07 01:27:28,895 INFO L78 Accepts]: Start accepts. Automaton has 11472 states and 47167 transitions. Word has length 63 [2021-11-07 01:27:28,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:27:28,911 INFO L470 AbstractCegarLoop]: Abstraction has 11472 states and 47167 transitions. [2021-11-07 01:27:28,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:28,911 INFO L276 IsEmpty]: Start isEmpty. Operand 11472 states and 47167 transitions. [2021-11-07 01:27:28,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 01:27:28,977 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:27:28,977 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:27:28,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 01:27:28,978 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATION, thread1Err5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION (and 7 more)] === [2021-11-07 01:27:28,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:27:28,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1694262699, now seen corresponding path program 5 times [2021-11-07 01:27:28,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:27:28,979 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848179906] [2021-11-07 01:27:28,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:27:28,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:27:29,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:27:29,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:27:29,622 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:27:29,622 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848179906] [2021-11-07 01:27:29,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848179906] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:27:29,623 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:27:29,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-07 01:27:29,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100119531] [2021-11-07 01:27:29,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-07 01:27:29,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:27:29,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-07 01:27:29,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2021-11-07 01:27:29,624 INFO L87 Difference]: Start difference. First operand 11472 states and 47167 transitions. Second operand has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:31,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:27:31,560 INFO L93 Difference]: Finished difference Result 15345 states and 62828 transitions. [2021-11-07 01:27:31,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-11-07 01:27:31,560 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 01:27:31,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:27:31,656 INFO L225 Difference]: With dead ends: 15345 [2021-11-07 01:27:31,656 INFO L226 Difference]: Without dead ends: 14944 [2021-11-07 01:27:31,657 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 544 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=245, Invalid=2407, Unknown=0, NotChecked=0, Total=2652 [2021-11-07 01:27:31,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14944 states. [2021-11-07 01:27:32,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14944 to 11452. [2021-11-07 01:27:32,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11452 states, 11451 states have (on average 4.113090559776439) internal successors, (47099), 11451 states have internal predecessors, (47099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:32,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11452 states to 11452 states and 47099 transitions. [2021-11-07 01:27:32,100 INFO L78 Accepts]: Start accepts. Automaton has 11452 states and 47099 transitions. Word has length 63 [2021-11-07 01:27:32,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:27:32,100 INFO L470 AbstractCegarLoop]: Abstraction has 11452 states and 47099 transitions. [2021-11-07 01:27:32,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:32,100 INFO L276 IsEmpty]: Start isEmpty. Operand 11452 states and 47099 transitions. [2021-11-07 01:27:32,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 01:27:32,130 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:27:32,130 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:27:32,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 01:27:32,131 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATION, thread1Err5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION (and 7 more)] === [2021-11-07 01:27:32,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:27:32,131 INFO L85 PathProgramCache]: Analyzing trace with hash 222218681, now seen corresponding path program 6 times [2021-11-07 01:27:32,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:27:32,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565561751] [2021-11-07 01:27:32,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:27:32,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:27:32,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:27:32,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:27:32,752 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:27:32,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565561751] [2021-11-07 01:27:32,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565561751] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:27:32,753 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:27:32,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-07 01:27:32,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972554547] [2021-11-07 01:27:32,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-07 01:27:32,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:27:32,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-07 01:27:32,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-11-07 01:27:32,755 INFO L87 Difference]: Start difference. First operand 11452 states and 47099 transitions. Second operand has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:34,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:27:34,770 INFO L93 Difference]: Finished difference Result 15975 states and 64468 transitions. [2021-11-07 01:27:34,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-11-07 01:27:34,771 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 01:27:34,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:27:34,836 INFO L225 Difference]: With dead ends: 15975 [2021-11-07 01:27:34,836 INFO L226 Difference]: Without dead ends: 15758 [2021-11-07 01:27:34,838 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 508 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=233, Invalid=2317, Unknown=0, NotChecked=0, Total=2550 [2021-11-07 01:27:34,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15758 states. [2021-11-07 01:27:35,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15758 to 11480. [2021-11-07 01:27:35,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11480 states, 11479 states have (on average 4.111420855475216) internal successors, (47195), 11479 states have internal predecessors, (47195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:35,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11480 states to 11480 states and 47195 transitions. [2021-11-07 01:27:35,492 INFO L78 Accepts]: Start accepts. Automaton has 11480 states and 47195 transitions. Word has length 63 [2021-11-07 01:27:35,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:27:35,493 INFO L470 AbstractCegarLoop]: Abstraction has 11480 states and 47195 transitions. [2021-11-07 01:27:35,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:35,493 INFO L276 IsEmpty]: Start isEmpty. Operand 11480 states and 47195 transitions. [2021-11-07 01:27:35,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 01:27:35,532 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:27:35,532 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:27:35,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 01:27:35,532 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATION, thread1Err5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION (and 7 more)] === [2021-11-07 01:27:35,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:27:35,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1641966429, now seen corresponding path program 7 times [2021-11-07 01:27:35,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:27:35,534 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913210515] [2021-11-07 01:27:35,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:27:35,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:27:35,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:27:36,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:27:36,484 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:27:36,485 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913210515] [2021-11-07 01:27:36,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913210515] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:27:36,485 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:27:36,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-07 01:27:36,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274794169] [2021-11-07 01:27:36,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-07 01:27:36,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:27:36,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-07 01:27:36,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=455, Unknown=0, NotChecked=0, Total=506 [2021-11-07 01:27:36,487 INFO L87 Difference]: Start difference. First operand 11480 states and 47195 transitions. Second operand has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:38,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:27:38,923 INFO L93 Difference]: Finished difference Result 16523 states and 65417 transitions. [2021-11-07 01:27:38,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-11-07 01:27:38,924 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 01:27:38,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:27:38,995 INFO L225 Difference]: With dead ends: 16523 [2021-11-07 01:27:38,995 INFO L226 Difference]: Without dead ends: 16222 [2021-11-07 01:27:38,996 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 890 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=309, Invalid=3231, Unknown=0, NotChecked=0, Total=3540 [2021-11-07 01:27:39,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16222 states. [2021-11-07 01:27:39,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16222 to 11600. [2021-11-07 01:27:39,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11600 states, 11599 states have (on average 4.107164410725063) internal successors, (47639), 11599 states have internal predecessors, (47639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:39,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11600 states to 11600 states and 47639 transitions. [2021-11-07 01:27:39,470 INFO L78 Accepts]: Start accepts. Automaton has 11600 states and 47639 transitions. Word has length 63 [2021-11-07 01:27:39,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:27:39,471 INFO L470 AbstractCegarLoop]: Abstraction has 11600 states and 47639 transitions. [2021-11-07 01:27:39,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:39,472 INFO L276 IsEmpty]: Start isEmpty. Operand 11600 states and 47639 transitions. [2021-11-07 01:27:39,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 01:27:39,630 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:27:39,630 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:27:39,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-07 01:27:39,630 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATION, thread1Err5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION (and 7 more)] === [2021-11-07 01:27:39,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:27:39,631 INFO L85 PathProgramCache]: Analyzing trace with hash -936291755, now seen corresponding path program 8 times [2021-11-07 01:27:39,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:27:39,631 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987504189] [2021-11-07 01:27:39,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:27:39,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:27:39,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:27:40,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:27:40,288 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:27:40,288 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987504189] [2021-11-07 01:27:40,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987504189] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:27:40,289 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:27:40,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-07 01:27:40,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837830844] [2021-11-07 01:27:40,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-07 01:27:40,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:27:40,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-07 01:27:40,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2021-11-07 01:27:40,291 INFO L87 Difference]: Start difference. First operand 11600 states and 47639 transitions. Second operand has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:43,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:27:43,595 INFO L93 Difference]: Finished difference Result 18033 states and 73588 transitions. [2021-11-07 01:27:43,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-11-07 01:27:43,596 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 01:27:43,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:27:43,648 INFO L225 Difference]: With dead ends: 18033 [2021-11-07 01:27:43,648 INFO L226 Difference]: Without dead ends: 17816 [2021-11-07 01:27:43,651 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2011 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=540, Invalid=6102, Unknown=0, NotChecked=0, Total=6642 [2021-11-07 01:27:43,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17816 states. [2021-11-07 01:27:43,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17816 to 11608. [2021-11-07 01:27:43,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11608 states, 11607 states have (on average 4.106056689928492) internal successors, (47659), 11607 states have internal predecessors, (47659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:44,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11608 states to 11608 states and 47659 transitions. [2021-11-07 01:27:44,005 INFO L78 Accepts]: Start accepts. Automaton has 11608 states and 47659 transitions. Word has length 63 [2021-11-07 01:27:44,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:27:44,005 INFO L470 AbstractCegarLoop]: Abstraction has 11608 states and 47659 transitions. [2021-11-07 01:27:44,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:44,005 INFO L276 IsEmpty]: Start isEmpty. Operand 11608 states and 47659 transitions. [2021-11-07 01:27:44,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 01:27:44,032 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:27:44,032 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:27:44,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-07 01:27:44,033 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATION, thread1Err5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION (and 7 more)] === [2021-11-07 01:27:44,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:27:44,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1128061123, now seen corresponding path program 9 times [2021-11-07 01:27:44,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:27:44,034 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912884576] [2021-11-07 01:27:44,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:27:44,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:27:44,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:27:44,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:27:44,635 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:27:44,635 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912884576] [2021-11-07 01:27:44,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912884576] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:27:44,636 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:27:44,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-07 01:27:44,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856684566] [2021-11-07 01:27:44,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-07 01:27:44,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:27:44,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-07 01:27:44,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-11-07 01:27:44,637 INFO L87 Difference]: Start difference. First operand 11608 states and 47659 transitions. Second operand has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:46,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:27:46,359 INFO L93 Difference]: Finished difference Result 16095 states and 65849 transitions. [2021-11-07 01:27:46,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-11-07 01:27:46,359 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 01:27:46,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:27:46,409 INFO L225 Difference]: With dead ends: 16095 [2021-11-07 01:27:46,409 INFO L226 Difference]: Without dead ends: 15866 [2021-11-07 01:27:46,410 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 539 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=239, Invalid=2413, Unknown=0, NotChecked=0, Total=2652 [2021-11-07 01:27:46,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15866 states. [2021-11-07 01:27:46,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15866 to 11600. [2021-11-07 01:27:46,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11600 states, 11599 states have (on average 4.105784981463919) internal successors, (47623), 11599 states have internal predecessors, (47623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:46,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11600 states to 11600 states and 47623 transitions. [2021-11-07 01:27:46,990 INFO L78 Accepts]: Start accepts. Automaton has 11600 states and 47623 transitions. Word has length 63 [2021-11-07 01:27:46,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:27:46,990 INFO L470 AbstractCegarLoop]: Abstraction has 11600 states and 47623 transitions. [2021-11-07 01:27:46,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:46,990 INFO L276 IsEmpty]: Start isEmpty. Operand 11600 states and 47623 transitions. [2021-11-07 01:27:47,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 01:27:47,010 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:27:47,010 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:27:47,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-07 01:27:47,010 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATION, thread1Err5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION (and 7 more)] === [2021-11-07 01:27:47,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:27:47,011 INFO L85 PathProgramCache]: Analyzing trace with hash -161662447, now seen corresponding path program 10 times [2021-11-07 01:27:47,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:27:47,011 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058735077] [2021-11-07 01:27:47,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:27:47,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:27:47,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:27:47,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:27:47,843 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:27:47,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058735077] [2021-11-07 01:27:47,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058735077] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:27:47,843 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:27:47,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-11-07 01:27:47,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567078727] [2021-11-07 01:27:47,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-07 01:27:47,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:27:47,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-07 01:27:47,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2021-11-07 01:27:47,845 INFO L87 Difference]: Start difference. First operand 11600 states and 47623 transitions. Second operand has 22 states, 21 states have (on average 3.0) internal successors, (63), 21 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:49,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:27:49,743 INFO L93 Difference]: Finished difference Result 15113 states and 60531 transitions. [2021-11-07 01:27:49,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-07 01:27:49,743 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.0) internal successors, (63), 21 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 01:27:49,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:27:49,785 INFO L225 Difference]: With dead ends: 15113 [2021-11-07 01:27:49,785 INFO L226 Difference]: Without dead ends: 14832 [2021-11-07 01:27:49,786 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=240, Invalid=2112, Unknown=0, NotChecked=0, Total=2352 [2021-11-07 01:27:49,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14832 states. [2021-11-07 01:27:50,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14832 to 11640. [2021-11-07 01:27:50,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11640 states, 11639 states have (on average 4.102156542658304) internal successors, (47745), 11639 states have internal predecessors, (47745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:50,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11640 states to 11640 states and 47745 transitions. [2021-11-07 01:27:50,075 INFO L78 Accepts]: Start accepts. Automaton has 11640 states and 47745 transitions. Word has length 63 [2021-11-07 01:27:50,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:27:50,075 INFO L470 AbstractCegarLoop]: Abstraction has 11640 states and 47745 transitions. [2021-11-07 01:27:50,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.0) internal successors, (63), 21 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:50,076 INFO L276 IsEmpty]: Start isEmpty. Operand 11640 states and 47745 transitions. [2021-11-07 01:27:50,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 01:27:50,097 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:27:50,097 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:27:50,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-07 01:27:50,098 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATION, thread1Err5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION (and 7 more)] === [2021-11-07 01:27:50,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:27:50,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1650441771, now seen corresponding path program 11 times [2021-11-07 01:27:50,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:27:50,098 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350182956] [2021-11-07 01:27:50,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:27:50,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:27:50,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:27:50,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:27:50,635 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:27:50,635 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350182956] [2021-11-07 01:27:50,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350182956] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:27:50,635 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:27:50,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-07 01:27:50,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219361734] [2021-11-07 01:27:50,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-07 01:27:50,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:27:50,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-07 01:27:50,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2021-11-07 01:27:50,637 INFO L87 Difference]: Start difference. First operand 11640 states and 47745 transitions. Second operand has 20 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 19 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:53,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:27:53,103 INFO L93 Difference]: Finished difference Result 16641 states and 67853 transitions. [2021-11-07 01:27:53,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-11-07 01:27:53,104 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 19 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 01:27:53,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:27:53,169 INFO L225 Difference]: With dead ends: 16641 [2021-11-07 01:27:53,169 INFO L226 Difference]: Without dead ends: 16372 [2021-11-07 01:27:53,171 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1004 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=375, Invalid=3785, Unknown=0, NotChecked=0, Total=4160 [2021-11-07 01:27:53,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16372 states. [2021-11-07 01:27:53,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16372 to 11632. [2021-11-07 01:27:53,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11632 states, 11631 states have (on average 4.1025707161894935) internal successors, (47717), 11631 states have internal predecessors, (47717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:53,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11632 states to 11632 states and 47717 transitions. [2021-11-07 01:27:53,703 INFO L78 Accepts]: Start accepts. Automaton has 11632 states and 47717 transitions. Word has length 63 [2021-11-07 01:27:53,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:27:53,703 INFO L470 AbstractCegarLoop]: Abstraction has 11632 states and 47717 transitions. [2021-11-07 01:27:53,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 19 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:53,703 INFO L276 IsEmpty]: Start isEmpty. Operand 11632 states and 47717 transitions. [2021-11-07 01:27:53,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 01:27:53,725 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:27:53,725 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:27:53,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-07 01:27:53,725 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATION, thread1Err5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION (and 7 more)] === [2021-11-07 01:27:53,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:27:53,726 INFO L85 PathProgramCache]: Analyzing trace with hash 234136323, now seen corresponding path program 12 times [2021-11-07 01:27:53,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:27:53,726 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695575786] [2021-11-07 01:27:53,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:27:53,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:27:53,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:27:54,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:27:54,224 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:27:54,224 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695575786] [2021-11-07 01:27:54,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695575786] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:27:54,224 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:27:54,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-07 01:27:54,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073605886] [2021-11-07 01:27:54,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-07 01:27:54,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:27:54,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-07 01:27:54,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2021-11-07 01:27:54,226 INFO L87 Difference]: Start difference. First operand 11632 states and 47717 transitions. Second operand has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:55,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:27:55,836 INFO L93 Difference]: Finished difference Result 15685 states and 64057 transitions. [2021-11-07 01:27:55,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-07 01:27:55,837 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 01:27:55,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:27:56,072 INFO L225 Difference]: With dead ends: 15685 [2021-11-07 01:27:56,072 INFO L226 Difference]: Without dead ends: 15304 [2021-11-07 01:27:56,074 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 614 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=263, Invalid=2599, Unknown=0, NotChecked=0, Total=2862 [2021-11-07 01:27:56,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15304 states. [2021-11-07 01:27:56,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15304 to 11672. [2021-11-07 01:27:56,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11672 states, 11671 states have (on average 4.0989632422243165) internal successors, (47839), 11671 states have internal predecessors, (47839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:56,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11672 states to 11672 states and 47839 transitions. [2021-11-07 01:27:56,448 INFO L78 Accepts]: Start accepts. Automaton has 11672 states and 47839 transitions. Word has length 63 [2021-11-07 01:27:56,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:27:56,448 INFO L470 AbstractCegarLoop]: Abstraction has 11672 states and 47839 transitions. [2021-11-07 01:27:56,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:56,448 INFO L276 IsEmpty]: Start isEmpty. Operand 11672 states and 47839 transitions. [2021-11-07 01:27:56,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 01:27:56,473 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:27:56,473 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:27:56,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-07 01:27:56,473 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATION, thread1Err5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION (and 7 more)] === [2021-11-07 01:27:56,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:27:56,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1736710725, now seen corresponding path program 13 times [2021-11-07 01:27:56,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:27:56,474 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375131319] [2021-11-07 01:27:56,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:27:56,475 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:27:56,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:27:57,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:27:57,003 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:27:57,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375131319] [2021-11-07 01:27:57,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375131319] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:27:57,003 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:27:57,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-07 01:27:57,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581360875] [2021-11-07 01:27:57,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-07 01:27:57,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:27:57,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-07 01:27:57,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-11-07 01:27:57,005 INFO L87 Difference]: Start difference. First operand 11672 states and 47839 transitions. Second operand has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:58,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:27:58,795 INFO L93 Difference]: Finished difference Result 15619 states and 63464 transitions. [2021-11-07 01:27:58,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-11-07 01:27:58,795 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 01:27:58,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:27:58,865 INFO L225 Difference]: With dead ends: 15619 [2021-11-07 01:27:58,866 INFO L226 Difference]: Without dead ends: 15338 [2021-11-07 01:27:58,868 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=247, Invalid=2405, Unknown=0, NotChecked=0, Total=2652 [2021-11-07 01:27:58,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15338 states. [2021-11-07 01:27:59,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15338 to 11712. [2021-11-07 01:27:59,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11712 states, 11711 states have (on average 4.095380411578858) internal successors, (47961), 11711 states have internal predecessors, (47961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:59,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11712 states to 11712 states and 47961 transitions. [2021-11-07 01:27:59,203 INFO L78 Accepts]: Start accepts. Automaton has 11712 states and 47961 transitions. Word has length 63 [2021-11-07 01:27:59,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:27:59,203 INFO L470 AbstractCegarLoop]: Abstraction has 11712 states and 47961 transitions. [2021-11-07 01:27:59,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:27:59,204 INFO L276 IsEmpty]: Start isEmpty. Operand 11712 states and 47961 transitions. [2021-11-07 01:27:59,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 01:27:59,449 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:27:59,449 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:27:59,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-07 01:27:59,451 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATION, thread1Err5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION (and 7 more)] === [2021-11-07 01:27:59,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:27:59,451 INFO L85 PathProgramCache]: Analyzing trace with hash 751994297, now seen corresponding path program 14 times [2021-11-07 01:27:59,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:27:59,452 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450011439] [2021-11-07 01:27:59,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:27:59,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:27:59,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:27:59,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:27:59,994 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:27:59,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450011439] [2021-11-07 01:27:59,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450011439] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:27:59,995 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:27:59,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-07 01:27:59,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748153390] [2021-11-07 01:27:59,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-07 01:27:59,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:27:59,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-07 01:27:59,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-11-07 01:27:59,996 INFO L87 Difference]: Start difference. First operand 11712 states and 47961 transitions. Second operand has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:01,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:28:01,611 INFO L93 Difference]: Finished difference Result 15337 states and 62588 transitions. [2021-11-07 01:28:01,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-11-07 01:28:01,611 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 01:28:01,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:28:01,655 INFO L225 Difference]: With dead ends: 15337 [2021-11-07 01:28:01,655 INFO L226 Difference]: Without dead ends: 15028 [2021-11-07 01:28:01,657 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 508 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=239, Invalid=2311, Unknown=0, NotChecked=0, Total=2550 [2021-11-07 01:28:01,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15028 states. [2021-11-07 01:28:02,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15028 to 11624. [2021-11-07 01:28:02,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11624 states, 11623 states have (on average 4.102297169405489) internal successors, (47681), 11623 states have internal predecessors, (47681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:02,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11624 states to 11624 states and 47681 transitions. [2021-11-07 01:28:02,118 INFO L78 Accepts]: Start accepts. Automaton has 11624 states and 47681 transitions. Word has length 63 [2021-11-07 01:28:02,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:28:02,118 INFO L470 AbstractCegarLoop]: Abstraction has 11624 states and 47681 transitions. [2021-11-07 01:28:02,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:02,118 INFO L276 IsEmpty]: Start isEmpty. Operand 11624 states and 47681 transitions. [2021-11-07 01:28:02,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 01:28:02,141 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:28:02,141 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:28:02,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-07 01:28:02,141 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATION, thread1Err5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION (and 7 more)] === [2021-11-07 01:28:02,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:28:02,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1301179463, now seen corresponding path program 15 times [2021-11-07 01:28:02,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:28:02,142 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090493897] [2021-11-07 01:28:02,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:28:02,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:28:02,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:28:02,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:28:02,826 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:28:02,826 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090493897] [2021-11-07 01:28:02,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090493897] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:28:02,826 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:28:02,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-07 01:28:02,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90133290] [2021-11-07 01:28:02,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-07 01:28:02,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:28:02,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-07 01:28:02,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=455, Unknown=0, NotChecked=0, Total=506 [2021-11-07 01:28:02,827 INFO L87 Difference]: Start difference. First operand 11624 states and 47681 transitions. Second operand has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:06,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:28:06,502 INFO L93 Difference]: Finished difference Result 18269 states and 74377 transitions. [2021-11-07 01:28:06,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-11-07 01:28:06,503 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 01:28:06,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:28:06,568 INFO L225 Difference]: With dead ends: 18269 [2021-11-07 01:28:06,568 INFO L226 Difference]: Without dead ends: 18052 [2021-11-07 01:28:06,570 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2108 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=564, Invalid=6242, Unknown=0, NotChecked=0, Total=6806 [2021-11-07 01:28:06,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18052 states. [2021-11-07 01:28:07,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18052 to 11640. [2021-11-07 01:28:07,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11640 states, 11639 states have (on average 4.102843886931867) internal successors, (47753), 11639 states have internal predecessors, (47753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:07,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11640 states to 11640 states and 47753 transitions. [2021-11-07 01:28:07,081 INFO L78 Accepts]: Start accepts. Automaton has 11640 states and 47753 transitions. Word has length 63 [2021-11-07 01:28:07,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:28:07,081 INFO L470 AbstractCegarLoop]: Abstraction has 11640 states and 47753 transitions. [2021-11-07 01:28:07,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:07,081 INFO L276 IsEmpty]: Start isEmpty. Operand 11640 states and 47753 transitions. [2021-11-07 01:28:07,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 01:28:07,102 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:28:07,103 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:28:07,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-07 01:28:07,103 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATION, thread1Err5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION (and 7 more)] === [2021-11-07 01:28:07,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:28:07,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1574040085, now seen corresponding path program 16 times [2021-11-07 01:28:07,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:28:07,105 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706068488] [2021-11-07 01:28:07,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:28:07,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:28:07,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:28:07,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:28:07,581 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:28:07,581 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706068488] [2021-11-07 01:28:07,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706068488] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:28:07,581 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:28:07,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-07 01:28:07,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688776454] [2021-11-07 01:28:07,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-07 01:28:07,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:28:07,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-07 01:28:07,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-11-07 01:28:07,583 INFO L87 Difference]: Start difference. First operand 11640 states and 47753 transitions. Second operand has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:08,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:28:08,983 INFO L93 Difference]: Finished difference Result 16421 states and 66360 transitions. [2021-11-07 01:28:08,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-07 01:28:08,989 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 01:28:08,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:28:09,036 INFO L225 Difference]: With dead ends: 16421 [2021-11-07 01:28:09,036 INFO L226 Difference]: Without dead ends: 16120 [2021-11-07 01:28:09,037 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=188, Invalid=1704, Unknown=0, NotChecked=0, Total=1892 [2021-11-07 01:28:09,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16120 states. [2021-11-07 01:28:09,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16120 to 11640. [2021-11-07 01:28:09,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11640 states, 11639 states have (on average 4.102156542658304) internal successors, (47745), 11639 states have internal predecessors, (47745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:09,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11640 states to 11640 states and 47745 transitions. [2021-11-07 01:28:09,559 INFO L78 Accepts]: Start accepts. Automaton has 11640 states and 47745 transitions. Word has length 63 [2021-11-07 01:28:09,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:28:09,559 INFO L470 AbstractCegarLoop]: Abstraction has 11640 states and 47745 transitions. [2021-11-07 01:28:09,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:09,559 INFO L276 IsEmpty]: Start isEmpty. Operand 11640 states and 47745 transitions. [2021-11-07 01:28:09,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 01:28:09,581 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:28:09,581 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:28:09,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-07 01:28:09,581 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATION, thread1Err5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION (and 7 more)] === [2021-11-07 01:28:09,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:28:09,582 INFO L85 PathProgramCache]: Analyzing trace with hash 142669027, now seen corresponding path program 17 times [2021-11-07 01:28:09,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:28:09,582 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792132138] [2021-11-07 01:28:09,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:28:09,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:28:09,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:28:10,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:28:10,264 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:28:10,264 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792132138] [2021-11-07 01:28:10,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792132138] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:28:10,264 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:28:10,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-07 01:28:10,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492833997] [2021-11-07 01:28:10,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-07 01:28:10,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:28:10,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-07 01:28:10,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=457, Unknown=0, NotChecked=0, Total=506 [2021-11-07 01:28:10,266 INFO L87 Difference]: Start difference. First operand 11640 states and 47745 transitions. Second operand has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:13,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:28:13,072 INFO L93 Difference]: Finished difference Result 16507 states and 66300 transitions. [2021-11-07 01:28:13,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-07 01:28:13,072 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 01:28:13,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:28:13,116 INFO L225 Difference]: With dead ends: 16507 [2021-11-07 01:28:13,117 INFO L226 Difference]: Without dead ends: 16290 [2021-11-07 01:28:13,118 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 971 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=356, Invalid=3676, Unknown=0, NotChecked=0, Total=4032 [2021-11-07 01:28:13,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16290 states. [2021-11-07 01:28:13,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16290 to 11664. [2021-11-07 01:28:13,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11664 states, 11663 states have (on average 4.10091743119266) internal successors, (47829), 11663 states have internal predecessors, (47829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:13,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11664 states to 11664 states and 47829 transitions. [2021-11-07 01:28:13,585 INFO L78 Accepts]: Start accepts. Automaton has 11664 states and 47829 transitions. Word has length 63 [2021-11-07 01:28:13,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:28:13,585 INFO L470 AbstractCegarLoop]: Abstraction has 11664 states and 47829 transitions. [2021-11-07 01:28:13,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:13,586 INFO L276 IsEmpty]: Start isEmpty. Operand 11664 states and 47829 transitions. [2021-11-07 01:28:13,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 01:28:13,605 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:28:13,605 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:28:13,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-07 01:28:13,606 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATION, thread1Err5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION (and 7 more)] === [2021-11-07 01:28:13,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:28:13,606 INFO L85 PathProgramCache]: Analyzing trace with hash -2087945391, now seen corresponding path program 18 times [2021-11-07 01:28:13,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:28:13,606 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685612375] [2021-11-07 01:28:13,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:28:13,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:28:13,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:28:14,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:28:14,151 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:28:14,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685612375] [2021-11-07 01:28:14,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685612375] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:28:14,151 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:28:14,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-07 01:28:14,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286127305] [2021-11-07 01:28:14,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-07 01:28:14,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:28:14,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-07 01:28:14,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2021-11-07 01:28:14,152 INFO L87 Difference]: Start difference. First operand 11664 states and 47829 transitions. Second operand has 20 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 19 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:16,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:28:16,520 INFO L93 Difference]: Finished difference Result 17879 states and 72546 transitions. [2021-11-07 01:28:16,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-07 01:28:16,521 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 19 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 01:28:16,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:28:16,579 INFO L225 Difference]: With dead ends: 17879 [2021-11-07 01:28:16,579 INFO L226 Difference]: Without dead ends: 17650 [2021-11-07 01:28:16,580 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 797 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=337, Invalid=3203, Unknown=0, NotChecked=0, Total=3540 [2021-11-07 01:28:16,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17650 states. [2021-11-07 01:28:16,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17650 to 11664. [2021-11-07 01:28:16,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11664 states, 11663 states have (on average 4.100231501328989) internal successors, (47821), 11663 states have internal predecessors, (47821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:16,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11664 states to 11664 states and 47821 transitions. [2021-11-07 01:28:16,896 INFO L78 Accepts]: Start accepts. Automaton has 11664 states and 47821 transitions. Word has length 63 [2021-11-07 01:28:16,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:28:16,896 INFO L470 AbstractCegarLoop]: Abstraction has 11664 states and 47821 transitions. [2021-11-07 01:28:16,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 19 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:16,896 INFO L276 IsEmpty]: Start isEmpty. Operand 11664 states and 47821 transitions. [2021-11-07 01:28:16,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 01:28:16,916 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:28:16,916 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:28:16,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-07 01:28:16,917 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATION, thread1Err5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION (and 7 more)] === [2021-11-07 01:28:16,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:28:16,917 INFO L85 PathProgramCache]: Analyzing trace with hash 917298335, now seen corresponding path program 19 times [2021-11-07 01:28:16,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:28:16,917 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159904594] [2021-11-07 01:28:16,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:28:16,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:28:16,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:28:17,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:28:17,415 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:28:17,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159904594] [2021-11-07 01:28:17,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159904594] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:28:17,416 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:28:17,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-07 01:28:17,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673197873] [2021-11-07 01:28:17,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-07 01:28:17,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:28:17,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-07 01:28:17,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-11-07 01:28:17,417 INFO L87 Difference]: Start difference. First operand 11664 states and 47821 transitions. Second operand has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:19,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:28:19,087 INFO L93 Difference]: Finished difference Result 17047 states and 68593 transitions. [2021-11-07 01:28:19,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-07 01:28:19,088 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 01:28:19,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:28:19,139 INFO L225 Difference]: With dead ends: 17047 [2021-11-07 01:28:19,139 INFO L226 Difference]: Without dead ends: 16766 [2021-11-07 01:28:19,140 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=206, Invalid=1864, Unknown=0, NotChecked=0, Total=2070 [2021-11-07 01:28:19,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16766 states. [2021-11-07 01:28:19,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16766 to 11704. [2021-11-07 01:28:19,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11704 states, 11703 states have (on average 4.096641886695719) internal successors, (47943), 11703 states have internal predecessors, (47943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:19,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11704 states to 11704 states and 47943 transitions. [2021-11-07 01:28:19,648 INFO L78 Accepts]: Start accepts. Automaton has 11704 states and 47943 transitions. Word has length 63 [2021-11-07 01:28:19,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:28:19,649 INFO L470 AbstractCegarLoop]: Abstraction has 11704 states and 47943 transitions. [2021-11-07 01:28:19,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:19,649 INFO L276 IsEmpty]: Start isEmpty. Operand 11704 states and 47943 transitions. [2021-11-07 01:28:19,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 01:28:19,669 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:28:19,669 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:28:19,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-07 01:28:19,669 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATION, thread1Err5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION (and 7 more)] === [2021-11-07 01:28:19,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:28:19,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1565564743, now seen corresponding path program 20 times [2021-11-07 01:28:19,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:28:19,670 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818388355] [2021-11-07 01:28:19,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:28:19,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:28:19,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:28:20,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:28:20,421 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:28:20,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818388355] [2021-11-07 01:28:20,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818388355] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:28:20,422 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:28:20,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-07 01:28:20,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926623882] [2021-11-07 01:28:20,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-07 01:28:20,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:28:20,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-07 01:28:20,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=456, Unknown=0, NotChecked=0, Total=506 [2021-11-07 01:28:20,423 INFO L87 Difference]: Start difference. First operand 11704 states and 47943 transitions. Second operand has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:22,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:28:22,144 INFO L93 Difference]: Finished difference Result 16353 states and 64847 transitions. [2021-11-07 01:28:22,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-07 01:28:22,145 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 01:28:22,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:28:22,191 INFO L225 Difference]: With dead ends: 16353 [2021-11-07 01:28:22,191 INFO L226 Difference]: Without dead ends: 16084 [2021-11-07 01:28:22,192 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 491 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=259, Invalid=2191, Unknown=0, NotChecked=0, Total=2450 [2021-11-07 01:28:22,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16084 states. [2021-11-07 01:28:22,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16084 to 11696. [2021-11-07 01:28:22,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11696 states, 11695 states have (on average 4.097050021376656) internal successors, (47915), 11695 states have internal predecessors, (47915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:22,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11696 states to 11696 states and 47915 transitions. [2021-11-07 01:28:22,654 INFO L78 Accepts]: Start accepts. Automaton has 11696 states and 47915 transitions. Word has length 63 [2021-11-07 01:28:22,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:28:22,655 INFO L470 AbstractCegarLoop]: Abstraction has 11696 states and 47915 transitions. [2021-11-07 01:28:22,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:22,655 INFO L276 IsEmpty]: Start isEmpty. Operand 11696 states and 47915 transitions. [2021-11-07 01:28:22,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 01:28:22,678 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:28:22,679 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:28:22,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-07 01:28:22,679 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATION, thread1Err5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION (and 7 more)] === [2021-11-07 01:28:22,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:28:22,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1626419521, now seen corresponding path program 21 times [2021-11-07 01:28:22,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:28:22,680 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951080971] [2021-11-07 01:28:22,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:28:22,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:28:22,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:28:23,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:28:23,434 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:28:23,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951080971] [2021-11-07 01:28:23,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951080971] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:28:23,434 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:28:23,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-11-07 01:28:23,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156006903] [2021-11-07 01:28:23,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-07 01:28:23,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:28:23,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-07 01:28:23,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2021-11-07 01:28:23,436 INFO L87 Difference]: Start difference. First operand 11696 states and 47915 transitions. Second operand has 22 states, 21 states have (on average 3.0) internal successors, (63), 21 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:25,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:28:25,036 INFO L93 Difference]: Finished difference Result 14703 states and 59091 transitions. [2021-11-07 01:28:25,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-07 01:28:25,036 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.0) internal successors, (63), 21 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 01:28:25,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:28:25,079 INFO L225 Difference]: With dead ends: 14703 [2021-11-07 01:28:25,079 INFO L226 Difference]: Without dead ends: 14486 [2021-11-07 01:28:25,079 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=192, Invalid=1614, Unknown=0, NotChecked=0, Total=1806 [2021-11-07 01:28:25,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14486 states. [2021-11-07 01:28:25,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14486 to 11712. [2021-11-07 01:28:25,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11712 states, 11711 states have (on average 4.095551191187772) internal successors, (47963), 11711 states have internal predecessors, (47963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:25,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11712 states to 11712 states and 47963 transitions. [2021-11-07 01:28:25,383 INFO L78 Accepts]: Start accepts. Automaton has 11712 states and 47963 transitions. Word has length 63 [2021-11-07 01:28:25,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:28:25,383 INFO L470 AbstractCegarLoop]: Abstraction has 11712 states and 47963 transitions. [2021-11-07 01:28:25,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.0) internal successors, (63), 21 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:25,383 INFO L276 IsEmpty]: Start isEmpty. Operand 11712 states and 47963 transitions. [2021-11-07 01:28:25,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 01:28:25,403 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:28:25,403 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:28:25,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-07 01:28:25,404 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATION, thread1Err5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION (and 7 more)] === [2021-11-07 01:28:25,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:28:25,404 INFO L85 PathProgramCache]: Analyzing trace with hash 437933357, now seen corresponding path program 22 times [2021-11-07 01:28:25,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:28:25,404 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217595282] [2021-11-07 01:28:25,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:28:25,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:28:25,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:28:26,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:28:26,245 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:28:26,245 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217595282] [2021-11-07 01:28:26,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217595282] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:28:26,245 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:28:26,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-07 01:28:26,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798706849] [2021-11-07 01:28:26,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-07 01:28:26,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:28:26,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-07 01:28:26,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=458, Unknown=0, NotChecked=0, Total=506 [2021-11-07 01:28:26,247 INFO L87 Difference]: Start difference. First operand 11712 states and 47963 transitions. Second operand has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:28,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:28:28,965 INFO L93 Difference]: Finished difference Result 17875 states and 72345 transitions. [2021-11-07 01:28:28,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-11-07 01:28:28,966 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 01:28:28,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:28:29,149 INFO L225 Difference]: With dead ends: 17875 [2021-11-07 01:28:29,149 INFO L226 Difference]: Without dead ends: 17646 [2021-11-07 01:28:29,150 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 793 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=350, Invalid=3190, Unknown=0, NotChecked=0, Total=3540 [2021-11-07 01:28:29,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17646 states. [2021-11-07 01:28:29,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17646 to 11704. [2021-11-07 01:28:29,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11704 states, 11703 states have (on average 4.095958301290268) internal successors, (47935), 11703 states have internal predecessors, (47935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:29,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11704 states to 11704 states and 47935 transitions. [2021-11-07 01:28:29,458 INFO L78 Accepts]: Start accepts. Automaton has 11704 states and 47935 transitions. Word has length 63 [2021-11-07 01:28:29,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:28:29,458 INFO L470 AbstractCegarLoop]: Abstraction has 11704 states and 47935 transitions. [2021-11-07 01:28:29,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:29,458 INFO L276 IsEmpty]: Start isEmpty. Operand 11704 states and 47935 transitions. [2021-11-07 01:28:29,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 01:28:29,479 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:28:29,479 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:28:29,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-07 01:28:29,479 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATION, thread1Err5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION (and 7 more)] === [2021-11-07 01:28:29,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:28:29,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1626439165, now seen corresponding path program 23 times [2021-11-07 01:28:29,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:28:29,480 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954829100] [2021-11-07 01:28:29,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:28:29,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:28:29,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:28:30,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:28:30,191 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:28:30,191 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954829100] [2021-11-07 01:28:30,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954829100] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:28:30,191 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:28:30,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-07 01:28:30,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643225427] [2021-11-07 01:28:30,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-07 01:28:30,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:28:30,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-07 01:28:30,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=458, Unknown=0, NotChecked=0, Total=506 [2021-11-07 01:28:30,193 INFO L87 Difference]: Start difference. First operand 11704 states and 47935 transitions. Second operand has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:32,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:28:32,275 INFO L93 Difference]: Finished difference Result 15093 states and 61296 transitions. [2021-11-07 01:28:32,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-07 01:28:32,275 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 01:28:32,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:28:32,321 INFO L225 Difference]: With dead ends: 15093 [2021-11-07 01:28:32,321 INFO L226 Difference]: Without dead ends: 14824 [2021-11-07 01:28:32,321 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 521 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=240, Invalid=2516, Unknown=0, NotChecked=0, Total=2756 [2021-11-07 01:28:32,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14824 states. [2021-11-07 01:28:32,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14824 to 11696. [2021-11-07 01:28:32,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11696 states, 11695 states have (on average 4.096365968362548) internal successors, (47907), 11695 states have internal predecessors, (47907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:32,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11696 states to 11696 states and 47907 transitions. [2021-11-07 01:28:32,627 INFO L78 Accepts]: Start accepts. Automaton has 11696 states and 47907 transitions. Word has length 63 [2021-11-07 01:28:32,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:28:32,627 INFO L470 AbstractCegarLoop]: Abstraction has 11696 states and 47907 transitions. [2021-11-07 01:28:32,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:32,627 INFO L276 IsEmpty]: Start isEmpty. Operand 11696 states and 47907 transitions. [2021-11-07 01:28:32,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 01:28:32,648 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:28:32,649 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:28:32,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-07 01:28:32,649 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATION, thread1Err5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION (and 7 more)] === [2021-11-07 01:28:32,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:28:32,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1812400219, now seen corresponding path program 24 times [2021-11-07 01:28:32,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:28:32,650 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289778891] [2021-11-07 01:28:32,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:28:32,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:28:32,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:28:33,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:28:33,328 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:28:33,328 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289778891] [2021-11-07 01:28:33,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289778891] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:28:33,328 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:28:33,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-07 01:28:33,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500200656] [2021-11-07 01:28:33,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-07 01:28:33,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:28:33,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-07 01:28:33,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=454, Unknown=0, NotChecked=0, Total=506 [2021-11-07 01:28:33,330 INFO L87 Difference]: Start difference. First operand 11696 states and 47907 transitions. Second operand has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:36,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:28:36,631 INFO L93 Difference]: Finished difference Result 18327 states and 75344 transitions. [2021-11-07 01:28:36,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-11-07 01:28:36,632 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 01:28:36,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:28:36,687 INFO L225 Difference]: With dead ends: 18327 [2021-11-07 01:28:36,687 INFO L226 Difference]: Without dead ends: 18046 [2021-11-07 01:28:36,688 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3209 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=769, Invalid=8543, Unknown=0, NotChecked=0, Total=9312 [2021-11-07 01:28:36,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18046 states. [2021-11-07 01:28:36,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18046 to 11736. [2021-11-07 01:28:36,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11736 states, 11735 states have (on average 4.096207925010652) internal successors, (48069), 11735 states have internal predecessors, (48069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:37,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11736 states to 11736 states and 48069 transitions. [2021-11-07 01:28:37,033 INFO L78 Accepts]: Start accepts. Automaton has 11736 states and 48069 transitions. Word has length 63 [2021-11-07 01:28:37,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:28:37,033 INFO L470 AbstractCegarLoop]: Abstraction has 11736 states and 48069 transitions. [2021-11-07 01:28:37,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:37,033 INFO L276 IsEmpty]: Start isEmpty. Operand 11736 states and 48069 transitions. [2021-11-07 01:28:37,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 01:28:37,056 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:28:37,056 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:28:37,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-07 01:28:37,056 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATION, thread1Err5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION (and 7 more)] === [2021-11-07 01:28:37,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:28:37,056 INFO L85 PathProgramCache]: Analyzing trace with hash -670462859, now seen corresponding path program 25 times [2021-11-07 01:28:37,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:28:37,056 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532005193] [2021-11-07 01:28:37,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:28:37,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:28:37,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:28:37,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:28:37,671 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:28:37,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532005193] [2021-11-07 01:28:37,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532005193] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:28:37,671 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:28:37,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-07 01:28:37,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970450925] [2021-11-07 01:28:37,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-07 01:28:37,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:28:37,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-07 01:28:37,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=454, Unknown=0, NotChecked=0, Total=506 [2021-11-07 01:28:37,673 INFO L87 Difference]: Start difference. First operand 11736 states and 48069 transitions. Second operand has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:41,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:28:41,704 INFO L93 Difference]: Finished difference Result 18773 states and 76673 transitions. [2021-11-07 01:28:41,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-11-07 01:28:41,705 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 01:28:41,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:28:41,833 INFO L225 Difference]: With dead ends: 18773 [2021-11-07 01:28:41,834 INFO L226 Difference]: Without dead ends: 18512 [2021-11-07 01:28:41,835 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3211 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=765, Invalid=8547, Unknown=0, NotChecked=0, Total=9312 [2021-11-07 01:28:41,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18512 states. [2021-11-07 01:28:42,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18512 to 11904. [2021-11-07 01:28:42,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11904 states, 11903 states have (on average 4.099722758968327) internal successors, (48799), 11903 states have internal predecessors, (48799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:42,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11904 states to 11904 states and 48799 transitions. [2021-11-07 01:28:42,389 INFO L78 Accepts]: Start accepts. Automaton has 11904 states and 48799 transitions. Word has length 63 [2021-11-07 01:28:42,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:28:42,390 INFO L470 AbstractCegarLoop]: Abstraction has 11904 states and 48799 transitions. [2021-11-07 01:28:42,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:42,390 INFO L276 IsEmpty]: Start isEmpty. Operand 11904 states and 48799 transitions. [2021-11-07 01:28:42,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 01:28:42,412 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:28:42,412 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:28:42,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-07 01:28:42,412 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATION, thread1Err5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION (and 7 more)] === [2021-11-07 01:28:42,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:28:42,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1797794821, now seen corresponding path program 26 times [2021-11-07 01:28:42,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:28:42,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507731594] [2021-11-07 01:28:42,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:28:42,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:28:42,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:28:42,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:28:42,920 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:28:42,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507731594] [2021-11-07 01:28:42,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507731594] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:28:42,921 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:28:42,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-07 01:28:42,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288743949] [2021-11-07 01:28:42,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-07 01:28:42,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:28:42,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-07 01:28:42,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-11-07 01:28:42,922 INFO L87 Difference]: Start difference. First operand 11904 states and 48799 transitions. Second operand has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:44,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:28:44,347 INFO L93 Difference]: Finished difference Result 16089 states and 65642 transitions. [2021-11-07 01:28:44,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-07 01:28:44,353 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 01:28:44,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:28:44,437 INFO L225 Difference]: With dead ends: 16089 [2021-11-07 01:28:44,438 INFO L226 Difference]: Without dead ends: 15780 [2021-11-07 01:28:44,438 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=188, Invalid=1704, Unknown=0, NotChecked=0, Total=1892 [2021-11-07 01:28:44,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15780 states. [2021-11-07 01:28:44,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15780 to 11856. [2021-11-07 01:28:44,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11856 states, 11855 states have (on average 4.102994517081401) internal successors, (48641), 11855 states have internal predecessors, (48641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:44,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11856 states to 11856 states and 48641 transitions. [2021-11-07 01:28:44,869 INFO L78 Accepts]: Start accepts. Automaton has 11856 states and 48641 transitions. Word has length 63 [2021-11-07 01:28:44,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:28:44,869 INFO L470 AbstractCegarLoop]: Abstraction has 11856 states and 48641 transitions. [2021-11-07 01:28:44,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:44,869 INFO L276 IsEmpty]: Start isEmpty. Operand 11856 states and 48641 transitions. [2021-11-07 01:28:44,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 01:28:44,898 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:28:44,898 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:28:44,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-07 01:28:44,898 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATION, thread1Err5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION (and 7 more)] === [2021-11-07 01:28:44,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:28:44,899 INFO L85 PathProgramCache]: Analyzing trace with hash -2082476345, now seen corresponding path program 27 times [2021-11-07 01:28:44,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:28:44,899 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18470008] [2021-11-07 01:28:44,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:28:44,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:28:44,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:28:45,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:28:45,704 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:28:45,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18470008] [2021-11-07 01:28:45,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18470008] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:28:45,705 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:28:45,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-07 01:28:45,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68453830] [2021-11-07 01:28:45,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-07 01:28:45,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:28:45,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-07 01:28:45,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=375, Unknown=0, NotChecked=0, Total=420 [2021-11-07 01:28:45,706 INFO L87 Difference]: Start difference. First operand 11856 states and 48641 transitions. Second operand has 21 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:47,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:28:47,437 INFO L93 Difference]: Finished difference Result 14969 states and 60515 transitions. [2021-11-07 01:28:47,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-07 01:28:47,437 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 01:28:47,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:28:47,523 INFO L225 Difference]: With dead ends: 14969 [2021-11-07 01:28:47,524 INFO L226 Difference]: Without dead ends: 14588 [2021-11-07 01:28:47,524 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=212, Invalid=1768, Unknown=0, NotChecked=0, Total=1980 [2021-11-07 01:28:47,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14588 states. [2021-11-07 01:28:47,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14588 to 11936. [2021-11-07 01:28:47,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11936 states, 11935 states have (on average 4.0992878089652285) internal successors, (48925), 11935 states have internal predecessors, (48925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:47,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11936 states to 11936 states and 48925 transitions. [2021-11-07 01:28:47,921 INFO L78 Accepts]: Start accepts. Automaton has 11936 states and 48925 transitions. Word has length 63 [2021-11-07 01:28:47,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:28:47,921 INFO L470 AbstractCegarLoop]: Abstraction has 11936 states and 48925 transitions. [2021-11-07 01:28:47,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:47,922 INFO L276 IsEmpty]: Start isEmpty. Operand 11936 states and 48925 transitions. [2021-11-07 01:28:47,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 01:28:47,949 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:28:47,949 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:28:47,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-07 01:28:47,949 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATION, thread1Err5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION (and 7 more)] === [2021-11-07 01:28:47,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:28:47,950 INFO L85 PathProgramCache]: Analyzing trace with hash 241643903, now seen corresponding path program 28 times [2021-11-07 01:28:47,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:28:47,950 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583677029] [2021-11-07 01:28:47,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:28:47,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:28:48,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:28:48,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:28:48,596 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:28:48,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583677029] [2021-11-07 01:28:48,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583677029] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:28:48,596 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:28:48,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-07 01:28:48,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114120182] [2021-11-07 01:28:48,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-07 01:28:48,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:28:48,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-07 01:28:48,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=455, Unknown=0, NotChecked=0, Total=506 [2021-11-07 01:28:48,598 INFO L87 Difference]: Start difference. First operand 11936 states and 48925 transitions. Second operand has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:51,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:28:51,973 INFO L93 Difference]: Finished difference Result 18469 states and 75572 transitions. [2021-11-07 01:28:51,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-11-07 01:28:51,974 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 01:28:51,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:28:52,068 INFO L225 Difference]: With dead ends: 18469 [2021-11-07 01:28:52,068 INFO L226 Difference]: Without dead ends: 18188 [2021-11-07 01:28:52,070 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2412 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=666, Invalid=7166, Unknown=0, NotChecked=0, Total=7832 [2021-11-07 01:28:52,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18188 states. [2021-11-07 01:28:52,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18188 to 12152. [2021-11-07 01:28:52,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12152 states, 12151 states have (on average 4.103448275862069) internal successors, (49861), 12151 states have internal predecessors, (49861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:52,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12152 states to 12152 states and 49861 transitions. [2021-11-07 01:28:52,535 INFO L78 Accepts]: Start accepts. Automaton has 12152 states and 49861 transitions. Word has length 63 [2021-11-07 01:28:52,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:28:52,535 INFO L470 AbstractCegarLoop]: Abstraction has 12152 states and 49861 transitions. [2021-11-07 01:28:52,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:52,535 INFO L276 IsEmpty]: Start isEmpty. Operand 12152 states and 49861 transitions. [2021-11-07 01:28:52,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 01:28:52,583 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:28:52,583 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:28:52,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-07 01:28:52,583 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATION, thread1Err5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION (and 7 more)] === [2021-11-07 01:28:52,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:28:52,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1564618371, now seen corresponding path program 29 times [2021-11-07 01:28:52,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:28:52,585 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174001575] [2021-11-07 01:28:52,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:28:52,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:28:52,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:28:53,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:28:53,549 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:28:53,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174001575] [2021-11-07 01:28:53,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174001575] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:28:53,550 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:28:53,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-07 01:28:53,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363797715] [2021-11-07 01:28:53,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-07 01:28:53,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:28:53,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-07 01:28:53,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=457, Unknown=0, NotChecked=0, Total=506 [2021-11-07 01:28:53,551 INFO L87 Difference]: Start difference. First operand 12152 states and 49861 transitions. Second operand has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:55,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:28:55,498 INFO L93 Difference]: Finished difference Result 15065 states and 60945 transitions. [2021-11-07 01:28:55,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-07 01:28:55,499 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 01:28:55,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:28:55,552 INFO L225 Difference]: With dead ends: 15065 [2021-11-07 01:28:55,552 INFO L226 Difference]: Without dead ends: 14764 [2021-11-07 01:28:55,553 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=207, Invalid=2145, Unknown=0, NotChecked=0, Total=2352 [2021-11-07 01:28:55,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14764 states. [2021-11-07 01:28:55,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14764 to 12112. [2021-11-07 01:28:55,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12112 states, 12111 states have (on average 4.103624803897284) internal successors, (49699), 12111 states have internal predecessors, (49699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:55,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12112 states to 12112 states and 49699 transitions. [2021-11-07 01:28:55,943 INFO L78 Accepts]: Start accepts. Automaton has 12112 states and 49699 transitions. Word has length 63 [2021-11-07 01:28:55,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:28:55,944 INFO L470 AbstractCegarLoop]: Abstraction has 12112 states and 49699 transitions. [2021-11-07 01:28:55,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:55,944 INFO L276 IsEmpty]: Start isEmpty. Operand 12112 states and 49699 transitions. [2021-11-07 01:28:55,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 01:28:55,974 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:28:55,974 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:28:55,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-07 01:28:55,974 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATION, thread1Err5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION (and 7 more)] === [2021-11-07 01:28:55,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:28:55,974 INFO L85 PathProgramCache]: Analyzing trace with hash -742421395, now seen corresponding path program 30 times [2021-11-07 01:28:55,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:28:55,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421298888] [2021-11-07 01:28:55,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:28:55,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:28:56,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:28:56,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:28:56,680 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:28:56,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421298888] [2021-11-07 01:28:56,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421298888] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:28:56,680 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:28:56,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-07 01:28:56,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526382108] [2021-11-07 01:28:56,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-07 01:28:56,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:28:56,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-07 01:28:56,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=455, Unknown=0, NotChecked=0, Total=506 [2021-11-07 01:28:56,682 INFO L87 Difference]: Start difference. First operand 12112 states and 49699 transitions. Second operand has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:00,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:29:00,256 INFO L93 Difference]: Finished difference Result 18535 states and 75774 transitions. [2021-11-07 01:29:00,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-11-07 01:29:00,256 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 01:29:00,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:29:00,310 INFO L225 Difference]: With dead ends: 18535 [2021-11-07 01:29:00,310 INFO L226 Difference]: Without dead ends: 18254 [2021-11-07 01:29:00,312 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2759 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=718, Invalid=7654, Unknown=0, NotChecked=0, Total=8372 [2021-11-07 01:29:00,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18254 states. [2021-11-07 01:29:00,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18254 to 12192. [2021-11-07 01:29:00,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12192 states, 12191 states have (on average 4.10327290624231) internal successors, (50023), 12191 states have internal predecessors, (50023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:00,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12192 states to 12192 states and 50023 transitions. [2021-11-07 01:29:00,754 INFO L78 Accepts]: Start accepts. Automaton has 12192 states and 50023 transitions. Word has length 63 [2021-11-07 01:29:00,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:29:00,754 INFO L470 AbstractCegarLoop]: Abstraction has 12192 states and 50023 transitions. [2021-11-07 01:29:00,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:00,755 INFO L276 IsEmpty]: Start isEmpty. Operand 12192 states and 50023 transitions. [2021-11-07 01:29:00,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 01:29:00,782 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:29:00,782 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:29:00,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-07 01:29:00,783 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATION, thread1Err5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION (and 7 more)] === [2021-11-07 01:29:00,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:29:00,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1746283627, now seen corresponding path program 31 times [2021-11-07 01:29:00,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:29:00,783 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037111189] [2021-11-07 01:29:00,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:29:00,783 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:29:00,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:29:01,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:29:01,357 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:29:01,357 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037111189] [2021-11-07 01:29:01,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037111189] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:29:01,358 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:29:01,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-07 01:29:01,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220083822] [2021-11-07 01:29:01,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-07 01:29:01,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:29:01,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-07 01:29:01,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2021-11-07 01:29:01,359 INFO L87 Difference]: Start difference. First operand 12192 states and 50023 transitions. Second operand has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:02,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:29:02,923 INFO L93 Difference]: Finished difference Result 16707 states and 67859 transitions. [2021-11-07 01:29:02,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-07 01:29:02,924 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 01:29:02,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:29:02,978 INFO L225 Difference]: With dead ends: 16707 [2021-11-07 01:29:02,978 INFO L226 Difference]: Without dead ends: 16446 [2021-11-07 01:29:02,979 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=210, Invalid=1860, Unknown=0, NotChecked=0, Total=2070 [2021-11-07 01:29:03,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16446 states. [2021-11-07 01:29:03,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16446 to 12192. [2021-11-07 01:29:03,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12192 states, 12191 states have (on average 4.099991797227463) internal successors, (49983), 12191 states have internal predecessors, (49983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:03,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12192 states to 12192 states and 49983 transitions. [2021-11-07 01:29:03,412 INFO L78 Accepts]: Start accepts. Automaton has 12192 states and 49983 transitions. Word has length 63 [2021-11-07 01:29:03,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:29:03,412 INFO L470 AbstractCegarLoop]: Abstraction has 12192 states and 49983 transitions. [2021-11-07 01:29:03,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:03,412 INFO L276 IsEmpty]: Start isEmpty. Operand 12192 states and 49983 transitions. [2021-11-07 01:29:03,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 01:29:03,441 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:29:03,442 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:29:03,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-07 01:29:03,442 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATION, thread1Err5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION (and 7 more)] === [2021-11-07 01:29:03,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:29:03,442 INFO L85 PathProgramCache]: Analyzing trace with hash 415104557, now seen corresponding path program 32 times [2021-11-07 01:29:03,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:29:03,443 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644753001] [2021-11-07 01:29:03,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:29:03,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:29:03,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:29:04,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:29:04,366 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:29:04,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644753001] [2021-11-07 01:29:04,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644753001] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:29:04,367 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:29:04,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-07 01:29:04,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130833323] [2021-11-07 01:29:04,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-07 01:29:04,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:29:04,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-07 01:29:04,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2021-11-07 01:29:04,369 INFO L87 Difference]: Start difference. First operand 12192 states and 49983 transitions. Second operand has 21 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:06,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:29:06,428 INFO L93 Difference]: Finished difference Result 16609 states and 67984 transitions. [2021-11-07 01:29:06,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-07 01:29:06,429 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 01:29:06,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:29:06,476 INFO L225 Difference]: With dead ends: 16609 [2021-11-07 01:29:06,476 INFO L226 Difference]: Without dead ends: 16260 [2021-11-07 01:29:06,477 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 587 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=266, Invalid=2386, Unknown=0, NotChecked=0, Total=2652 [2021-11-07 01:29:06,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16260 states. [2021-11-07 01:29:06,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16260 to 12104. [2021-11-07 01:29:06,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12104 states, 12103 states have (on average 4.104023795753119) internal successors, (49671), 12103 states have internal predecessors, (49671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:06,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12104 states to 12104 states and 49671 transitions. [2021-11-07 01:29:06,803 INFO L78 Accepts]: Start accepts. Automaton has 12104 states and 49671 transitions. Word has length 63 [2021-11-07 01:29:06,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:29:06,804 INFO L470 AbstractCegarLoop]: Abstraction has 12104 states and 49671 transitions. [2021-11-07 01:29:06,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:06,804 INFO L276 IsEmpty]: Start isEmpty. Operand 12104 states and 49671 transitions. [2021-11-07 01:29:06,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 01:29:06,827 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:29:06,827 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:29:06,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-07 01:29:06,827 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATION, thread1Err5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION (and 7 more)] === [2021-11-07 01:29:06,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:29:06,828 INFO L85 PathProgramCache]: Analyzing trace with hash -214998397, now seen corresponding path program 33 times [2021-11-07 01:29:06,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:29:06,828 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259639099] [2021-11-07 01:29:06,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:29:06,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:29:06,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:29:07,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:29:07,551 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:29:07,551 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259639099] [2021-11-07 01:29:07,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259639099] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:29:07,551 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:29:07,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-07 01:29:07,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285473984] [2021-11-07 01:29:07,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-07 01:29:07,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:29:07,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-07 01:29:07,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=375, Unknown=0, NotChecked=0, Total=420 [2021-11-07 01:29:07,553 INFO L87 Difference]: Start difference. First operand 12104 states and 49671 transitions. Second operand has 21 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:09,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:29:09,212 INFO L93 Difference]: Finished difference Result 15177 states and 61343 transitions. [2021-11-07 01:29:09,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-07 01:29:09,212 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 01:29:09,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:29:09,255 INFO L225 Difference]: With dead ends: 15177 [2021-11-07 01:29:09,255 INFO L226 Difference]: Without dead ends: 14796 [2021-11-07 01:29:09,256 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=223, Invalid=1669, Unknown=0, NotChecked=0, Total=1892 [2021-11-07 01:29:09,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14796 states. [2021-11-07 01:29:09,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14796 to 12224. [2021-11-07 01:29:09,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12224 states, 12223 states have (on average 4.096948376012436) internal successors, (50077), 12223 states have internal predecessors, (50077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:09,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12224 states to 12224 states and 50077 transitions. [2021-11-07 01:29:09,582 INFO L78 Accepts]: Start accepts. Automaton has 12224 states and 50077 transitions. Word has length 63 [2021-11-07 01:29:09,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:29:09,583 INFO L470 AbstractCegarLoop]: Abstraction has 12224 states and 50077 transitions. [2021-11-07 01:29:09,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:09,583 INFO L276 IsEmpty]: Start isEmpty. Operand 12224 states and 50077 transitions. [2021-11-07 01:29:09,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 01:29:09,605 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:29:09,605 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:29:09,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-07 01:29:09,605 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATION, thread1Err5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION (and 7 more)] === [2021-11-07 01:29:09,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:29:09,606 INFO L85 PathProgramCache]: Analyzing trace with hash 2109121851, now seen corresponding path program 34 times [2021-11-07 01:29:09,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:29:09,606 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892253636] [2021-11-07 01:29:09,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:29:09,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:29:09,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:29:10,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:29:10,275 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:29:10,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892253636] [2021-11-07 01:29:10,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892253636] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:29:10,276 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:29:10,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-07 01:29:10,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296154869] [2021-11-07 01:29:10,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-07 01:29:10,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:29:10,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-07 01:29:10,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=455, Unknown=0, NotChecked=0, Total=506 [2021-11-07 01:29:10,277 INFO L87 Difference]: Start difference. First operand 12224 states and 50077 transitions. Second operand has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:11,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:29:11,734 INFO L93 Difference]: Finished difference Result 16307 states and 65185 transitions. [2021-11-07 01:29:11,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-07 01:29:11,735 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 01:29:11,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:29:11,782 INFO L225 Difference]: With dead ends: 16307 [2021-11-07 01:29:11,782 INFO L226 Difference]: Without dead ends: 16026 [2021-11-07 01:29:11,783 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=215, Invalid=2137, Unknown=0, NotChecked=0, Total=2352 [2021-11-07 01:29:11,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16026 states. [2021-11-07 01:29:12,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16026 to 12224. [2021-11-07 01:29:12,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12224 states, 12223 states have (on average 4.096948376012436) internal successors, (50077), 12223 states have internal predecessors, (50077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:12,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12224 states to 12224 states and 50077 transitions. [2021-11-07 01:29:12,119 INFO L78 Accepts]: Start accepts. Automaton has 12224 states and 50077 transitions. Word has length 63 [2021-11-07 01:29:12,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:29:12,119 INFO L470 AbstractCegarLoop]: Abstraction has 12224 states and 50077 transitions. [2021-11-07 01:29:12,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:12,119 INFO L276 IsEmpty]: Start isEmpty. Operand 12224 states and 50077 transitions. [2021-11-07 01:29:12,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 01:29:12,141 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:29:12,141 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:29:12,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-07 01:29:12,141 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATION, thread1Err5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION (and 7 more)] === [2021-11-07 01:29:12,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:29:12,142 INFO L85 PathProgramCache]: Analyzing trace with hash 302859577, now seen corresponding path program 35 times [2021-11-07 01:29:12,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:29:12,142 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855384744] [2021-11-07 01:29:12,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:29:12,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:29:12,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:29:12,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:29:12,957 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:29:12,957 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855384744] [2021-11-07 01:29:12,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855384744] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:29:12,957 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:29:12,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-07 01:29:12,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359533258] [2021-11-07 01:29:12,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-07 01:29:12,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:29:12,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-07 01:29:12,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=457, Unknown=0, NotChecked=0, Total=506 [2021-11-07 01:29:12,958 INFO L87 Difference]: Start difference. First operand 12224 states and 50077 transitions. Second operand has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:14,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:29:14,716 INFO L93 Difference]: Finished difference Result 15057 states and 60837 transitions. [2021-11-07 01:29:14,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-07 01:29:14,717 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 01:29:14,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:29:14,761 INFO L225 Difference]: With dead ends: 15057 [2021-11-07 01:29:14,761 INFO L226 Difference]: Without dead ends: 14756 [2021-11-07 01:29:14,762 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=200, Invalid=2056, Unknown=0, NotChecked=0, Total=2256 [2021-11-07 01:29:14,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14756 states. [2021-11-07 01:29:15,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14756 to 12184. [2021-11-07 01:29:15,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12184 states, 12183 states have (on average 4.0971025199047855) internal successors, (49915), 12183 states have internal predecessors, (49915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:15,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12184 states to 12184 states and 49915 transitions. [2021-11-07 01:29:15,091 INFO L78 Accepts]: Start accepts. Automaton has 12184 states and 49915 transitions. Word has length 63 [2021-11-07 01:29:15,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:29:15,091 INFO L470 AbstractCegarLoop]: Abstraction has 12184 states and 49915 transitions. [2021-11-07 01:29:15,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:15,091 INFO L276 IsEmpty]: Start isEmpty. Operand 12184 states and 49915 transitions. [2021-11-07 01:29:15,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 01:29:15,113 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:29:15,113 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:29:15,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-07 01:29:15,114 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATION, thread1Err5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION (and 7 more)] === [2021-11-07 01:29:15,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:29:15,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1125056553, now seen corresponding path program 36 times [2021-11-07 01:29:15,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:29:15,115 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527239509] [2021-11-07 01:29:15,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:29:15,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:29:15,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:29:15,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:29:15,680 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:29:15,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527239509] [2021-11-07 01:29:15,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527239509] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:29:15,680 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:29:15,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-07 01:29:15,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035151620] [2021-11-07 01:29:15,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-07 01:29:15,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:29:15,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-07 01:29:15,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=455, Unknown=0, NotChecked=0, Total=506 [2021-11-07 01:29:15,682 INFO L87 Difference]: Start difference. First operand 12184 states and 49915 transitions. Second operand has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:17,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:29:17,389 INFO L93 Difference]: Finished difference Result 16519 states and 66428 transitions. [2021-11-07 01:29:17,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-11-07 01:29:17,389 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 01:29:17,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:29:17,432 INFO L225 Difference]: With dead ends: 16519 [2021-11-07 01:29:17,432 INFO L226 Difference]: Without dead ends: 16238 [2021-11-07 01:29:17,433 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 766 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=282, Invalid=2910, Unknown=0, NotChecked=0, Total=3192 [2021-11-07 01:29:17,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16238 states. [2021-11-07 01:29:17,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16238 to 12224. [2021-11-07 01:29:17,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12224 states, 12223 states have (on average 4.096948376012436) internal successors, (50077), 12223 states have internal predecessors, (50077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:17,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12224 states to 12224 states and 50077 transitions. [2021-11-07 01:29:17,751 INFO L78 Accepts]: Start accepts. Automaton has 12224 states and 50077 transitions. Word has length 63 [2021-11-07 01:29:17,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:29:17,751 INFO L470 AbstractCegarLoop]: Abstraction has 12224 states and 50077 transitions. [2021-11-07 01:29:17,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:17,751 INFO L276 IsEmpty]: Start isEmpty. Operand 12224 states and 50077 transitions. [2021-11-07 01:29:17,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 01:29:17,772 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:29:17,772 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:29:17,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-07 01:29:17,773 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATION, thread1Err5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION (and 7 more)] === [2021-11-07 01:29:17,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:29:17,773 INFO L85 PathProgramCache]: Analyzing trace with hash -681205721, now seen corresponding path program 37 times [2021-11-07 01:29:17,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:29:17,773 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781089011] [2021-11-07 01:29:17,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:29:17,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:29:17,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:29:18,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:29:18,254 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:29:18,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781089011] [2021-11-07 01:29:18,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781089011] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:29:18,254 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:29:18,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-07 01:29:18,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053740209] [2021-11-07 01:29:18,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-07 01:29:18,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:29:18,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-07 01:29:18,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2021-11-07 01:29:18,255 INFO L87 Difference]: Start difference. First operand 12224 states and 50077 transitions. Second operand has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:19,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:29:19,803 INFO L93 Difference]: Finished difference Result 17169 states and 69370 transitions. [2021-11-07 01:29:19,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-07 01:29:19,803 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 01:29:19,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:29:19,852 INFO L225 Difference]: With dead ends: 17169 [2021-11-07 01:29:19,852 INFO L226 Difference]: Without dead ends: 16908 [2021-11-07 01:29:19,853 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 446 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=241, Invalid=2111, Unknown=0, NotChecked=0, Total=2352 [2021-11-07 01:29:19,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16908 states. [2021-11-07 01:29:20,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16908 to 12304. [2021-11-07 01:29:20,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12304 states, 12303 states have (on average 4.090140616109892) internal successors, (50321), 12303 states have internal predecessors, (50321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:20,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12304 states to 12304 states and 50321 transitions. [2021-11-07 01:29:20,213 INFO L78 Accepts]: Start accepts. Automaton has 12304 states and 50321 transitions. Word has length 63 [2021-11-07 01:29:20,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:29:20,213 INFO L470 AbstractCegarLoop]: Abstraction has 12304 states and 50321 transitions. [2021-11-07 01:29:20,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:20,213 INFO L276 IsEmpty]: Start isEmpty. Operand 12304 states and 50321 transitions. [2021-11-07 01:29:20,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 01:29:20,235 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:29:20,235 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:29:20,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-07 01:29:20,236 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATION, thread1Err5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION (and 7 more)] === [2021-11-07 01:29:20,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:29:20,236 INFO L85 PathProgramCache]: Analyzing trace with hash -2012384791, now seen corresponding path program 38 times [2021-11-07 01:29:20,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:29:20,236 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258584865] [2021-11-07 01:29:20,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:29:20,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:29:20,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:29:21,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:29:21,023 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:29:21,023 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258584865] [2021-11-07 01:29:21,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258584865] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:29:21,023 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:29:21,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-07 01:29:21,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423062866] [2021-11-07 01:29:21,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-07 01:29:21,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:29:21,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-07 01:29:21,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2021-11-07 01:29:21,025 INFO L87 Difference]: Start difference. First operand 12304 states and 50321 transitions. Second operand has 21 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:23,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:29:23,168 INFO L93 Difference]: Finished difference Result 16677 states and 68099 transitions. [2021-11-07 01:29:23,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-11-07 01:29:23,169 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 01:29:23,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:29:23,213 INFO L225 Difference]: With dead ends: 16677 [2021-11-07 01:29:23,214 INFO L226 Difference]: Without dead ends: 16288 [2021-11-07 01:29:23,214 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 684 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=301, Invalid=2669, Unknown=0, NotChecked=0, Total=2970 [2021-11-07 01:29:23,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16288 states. [2021-11-07 01:29:23,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16288 to 12216. [2021-11-07 01:29:23,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12216 states, 12215 states have (on average 4.097339336880884) internal successors, (50049), 12215 states have internal predecessors, (50049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:23,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12216 states to 12216 states and 50049 transitions. [2021-11-07 01:29:23,552 INFO L78 Accepts]: Start accepts. Automaton has 12216 states and 50049 transitions. Word has length 63 [2021-11-07 01:29:23,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:29:23,553 INFO L470 AbstractCegarLoop]: Abstraction has 12216 states and 50049 transitions. [2021-11-07 01:29:23,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:23,553 INFO L276 IsEmpty]: Start isEmpty. Operand 12216 states and 50049 transitions. [2021-11-07 01:29:23,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 01:29:23,576 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:29:23,576 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:29:23,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-07 01:29:23,576 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATION, thread1Err5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION (and 7 more)] === [2021-11-07 01:29:23,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:29:23,576 INFO L85 PathProgramCache]: Analyzing trace with hash -473991609, now seen corresponding path program 39 times [2021-11-07 01:29:23,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:29:23,577 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457765244] [2021-11-07 01:29:23,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:29:23,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:29:23,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:29:24,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:29:24,349 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:29:24,349 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457765244] [2021-11-07 01:29:24,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457765244] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:29:24,349 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:29:24,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-07 01:29:24,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810922636] [2021-11-07 01:29:24,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-07 01:29:24,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:29:24,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-07 01:29:24,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=375, Unknown=0, NotChecked=0, Total=420 [2021-11-07 01:29:24,351 INFO L87 Difference]: Start difference. First operand 12216 states and 50049 transitions. Second operand has 21 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:25,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:29:25,879 INFO L93 Difference]: Finished difference Result 15229 states and 61368 transitions. [2021-11-07 01:29:25,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-07 01:29:25,880 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 01:29:25,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:29:25,922 INFO L225 Difference]: With dead ends: 15229 [2021-11-07 01:29:25,922 INFO L226 Difference]: Without dead ends: 14848 [2021-11-07 01:29:25,922 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=220, Invalid=1672, Unknown=0, NotChecked=0, Total=1892 [2021-11-07 01:29:25,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14848 states. [2021-11-07 01:29:26,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14848 to 12456. [2021-11-07 01:29:26,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12456 states, 12455 states have (on average 4.077157767964673) internal successors, (50781), 12455 states have internal predecessors, (50781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:26,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12456 states to 12456 states and 50781 transitions. [2021-11-07 01:29:26,250 INFO L78 Accepts]: Start accepts. Automaton has 12456 states and 50781 transitions. Word has length 63 [2021-11-07 01:29:26,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:29:26,251 INFO L470 AbstractCegarLoop]: Abstraction has 12456 states and 50781 transitions. [2021-11-07 01:29:26,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:26,251 INFO L276 IsEmpty]: Start isEmpty. Operand 12456 states and 50781 transitions. [2021-11-07 01:29:26,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 01:29:26,279 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:29:26,279 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:29:26,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-07 01:29:26,279 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATION, thread1Err5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION (and 7 more)] === [2021-11-07 01:29:26,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:29:26,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1850128639, now seen corresponding path program 40 times [2021-11-07 01:29:26,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:29:26,281 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210089016] [2021-11-07 01:29:26,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:29:26,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:29:26,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:29:26,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:29:26,943 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:29:26,943 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210089016] [2021-11-07 01:29:26,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210089016] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:29:26,943 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:29:26,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-07 01:29:26,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223438123] [2021-11-07 01:29:26,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-07 01:29:26,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:29:26,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-07 01:29:26,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=455, Unknown=0, NotChecked=0, Total=506 [2021-11-07 01:29:26,944 INFO L87 Difference]: Start difference. First operand 12456 states and 50781 transitions. Second operand has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:28,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:29:28,237 INFO L93 Difference]: Finished difference Result 16359 states and 65210 transitions. [2021-11-07 01:29:28,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-07 01:29:28,237 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 01:29:28,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:29:28,286 INFO L225 Difference]: With dead ends: 16359 [2021-11-07 01:29:28,286 INFO L226 Difference]: Without dead ends: 16078 [2021-11-07 01:29:28,286 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=213, Invalid=2139, Unknown=0, NotChecked=0, Total=2352 [2021-11-07 01:29:28,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16078 states. [2021-11-07 01:29:28,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16078 to 12456. [2021-11-07 01:29:28,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12456 states, 12455 states have (on average 4.077157767964673) internal successors, (50781), 12455 states have internal predecessors, (50781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:28,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12456 states to 12456 states and 50781 transitions. [2021-11-07 01:29:28,616 INFO L78 Accepts]: Start accepts. Automaton has 12456 states and 50781 transitions. Word has length 63 [2021-11-07 01:29:28,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:29:28,616 INFO L470 AbstractCegarLoop]: Abstraction has 12456 states and 50781 transitions. [2021-11-07 01:29:28,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:28,616 INFO L276 IsEmpty]: Start isEmpty. Operand 12456 states and 50781 transitions. [2021-11-07 01:29:28,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 01:29:28,641 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:29:28,641 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:29:28,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-07 01:29:28,641 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATION, thread1Err5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION (and 7 more)] === [2021-11-07 01:29:28,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:29:28,642 INFO L85 PathProgramCache]: Analyzing trace with hash 43866365, now seen corresponding path program 41 times [2021-11-07 01:29:28,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:29:28,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344501016] [2021-11-07 01:29:28,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:29:28,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:29:28,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:29:29,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:29:29,493 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:29:29,494 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344501016] [2021-11-07 01:29:29,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344501016] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:29:29,494 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:29:29,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-07 01:29:29,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933097291] [2021-11-07 01:29:29,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-07 01:29:29,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:29:29,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-07 01:29:29,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=457, Unknown=0, NotChecked=0, Total=506 [2021-11-07 01:29:29,495 INFO L87 Difference]: Start difference. First operand 12456 states and 50781 transitions. Second operand has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:31,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:29:31,136 INFO L93 Difference]: Finished difference Result 15109 states and 60862 transitions. [2021-11-07 01:29:31,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-07 01:29:31,137 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 01:29:31,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:29:31,177 INFO L225 Difference]: With dead ends: 15109 [2021-11-07 01:29:31,177 INFO L226 Difference]: Without dead ends: 14808 [2021-11-07 01:29:31,177 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=198, Invalid=2058, Unknown=0, NotChecked=0, Total=2256 [2021-11-07 01:29:31,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14808 states. [2021-11-07 01:29:31,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14808 to 12416. [2021-11-07 01:29:31,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12416 states, 12415 states have (on average 4.077245267821184) internal successors, (50619), 12415 states have internal predecessors, (50619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:31,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12416 states to 12416 states and 50619 transitions. [2021-11-07 01:29:31,642 INFO L78 Accepts]: Start accepts. Automaton has 12416 states and 50619 transitions. Word has length 63 [2021-11-07 01:29:31,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:29:31,642 INFO L470 AbstractCegarLoop]: Abstraction has 12416 states and 50619 transitions. [2021-11-07 01:29:31,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:31,642 INFO L276 IsEmpty]: Start isEmpty. Operand 12416 states and 50619 transitions. [2021-11-07 01:29:31,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 01:29:31,667 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:29:31,667 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:29:31,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-07 01:29:31,667 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATION, thread1Err5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION (and 7 more)] === [2021-11-07 01:29:31,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:29:31,670 INFO L85 PathProgramCache]: Analyzing trace with hash 866063341, now seen corresponding path program 42 times [2021-11-07 01:29:31,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:29:31,670 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502926533] [2021-11-07 01:29:31,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:29:31,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:29:31,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:29:32,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:29:32,218 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:29:32,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502926533] [2021-11-07 01:29:32,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502926533] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:29:32,220 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:29:32,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-07 01:29:32,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924529520] [2021-11-07 01:29:32,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-07 01:29:32,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:29:32,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-07 01:29:32,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=455, Unknown=0, NotChecked=0, Total=506 [2021-11-07 01:29:32,221 INFO L87 Difference]: Start difference. First operand 12416 states and 50619 transitions. Second operand has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:34,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:29:34,132 INFO L93 Difference]: Finished difference Result 16571 states and 66453 transitions. [2021-11-07 01:29:34,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-11-07 01:29:34,132 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 01:29:34,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:29:34,182 INFO L225 Difference]: With dead ends: 16571 [2021-11-07 01:29:34,182 INFO L226 Difference]: Without dead ends: 16290 [2021-11-07 01:29:34,182 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 766 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=281, Invalid=2911, Unknown=0, NotChecked=0, Total=3192 [2021-11-07 01:29:34,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16290 states. [2021-11-07 01:29:34,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16290 to 12456. [2021-11-07 01:29:34,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12456 states, 12455 states have (on average 4.077157767964673) internal successors, (50781), 12455 states have internal predecessors, (50781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:34,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12456 states to 12456 states and 50781 transitions. [2021-11-07 01:29:34,533 INFO L78 Accepts]: Start accepts. Automaton has 12456 states and 50781 transitions. Word has length 63 [2021-11-07 01:29:34,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:29:34,533 INFO L470 AbstractCegarLoop]: Abstraction has 12456 states and 50781 transitions. [2021-11-07 01:29:34,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:34,533 INFO L276 IsEmpty]: Start isEmpty. Operand 12456 states and 50781 transitions. [2021-11-07 01:29:34,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 01:29:34,561 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:29:34,561 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:29:34,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-11-07 01:29:34,561 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATION, thread1Err5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION (and 7 more)] === [2021-11-07 01:29:34,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:29:34,561 INFO L85 PathProgramCache]: Analyzing trace with hash -940198933, now seen corresponding path program 43 times [2021-11-07 01:29:34,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:29:34,562 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114405751] [2021-11-07 01:29:34,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:29:34,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:29:34,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:29:35,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:29:35,041 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:29:35,041 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114405751] [2021-11-07 01:29:35,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114405751] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:29:35,041 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:29:35,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-07 01:29:35,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507859706] [2021-11-07 01:29:35,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-07 01:29:35,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:29:35,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-07 01:29:35,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2021-11-07 01:29:35,043 INFO L87 Difference]: Start difference. First operand 12456 states and 50781 transitions. Second operand has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:36,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:29:36,523 INFO L93 Difference]: Finished difference Result 16925 states and 67631 transitions. [2021-11-07 01:29:36,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-07 01:29:36,523 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 01:29:36,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:29:36,569 INFO L225 Difference]: With dead ends: 16925 [2021-11-07 01:29:36,569 INFO L226 Difference]: Without dead ends: 16664 [2021-11-07 01:29:36,570 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=182, Invalid=1624, Unknown=0, NotChecked=0, Total=1806 [2021-11-07 01:29:36,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16664 states. [2021-11-07 01:29:36,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16664 to 12656. [2021-11-07 01:29:36,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12656 states, 12655 states have (on average 4.057763729751087) internal successors, (51351), 12655 states have internal predecessors, (51351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:36,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12656 states to 12656 states and 51351 transitions. [2021-11-07 01:29:36,901 INFO L78 Accepts]: Start accepts. Automaton has 12656 states and 51351 transitions. Word has length 63 [2021-11-07 01:29:36,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:29:36,901 INFO L470 AbstractCegarLoop]: Abstraction has 12656 states and 51351 transitions. [2021-11-07 01:29:36,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:36,902 INFO L276 IsEmpty]: Start isEmpty. Operand 12656 states and 51351 transitions. [2021-11-07 01:29:36,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 01:29:36,926 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:29:36,926 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:29:36,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-07 01:29:36,926 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATION, thread1Err5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION (and 7 more)] === [2021-11-07 01:29:36,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:29:36,927 INFO L85 PathProgramCache]: Analyzing trace with hash 2023589293, now seen corresponding path program 44 times [2021-11-07 01:29:36,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:29:36,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285870272] [2021-11-07 01:29:36,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:29:36,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:29:36,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:29:37,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:29:37,576 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:29:37,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285870272] [2021-11-07 01:29:37,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285870272] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:29:37,576 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:29:37,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-07 01:29:37,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491400174] [2021-11-07 01:29:37,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-07 01:29:37,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:29:37,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-07 01:29:37,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2021-11-07 01:29:37,577 INFO L87 Difference]: Start difference. First operand 12656 states and 51351 transitions. Second operand has 21 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:39,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:29:39,596 INFO L93 Difference]: Finished difference Result 16497 states and 66712 transitions. [2021-11-07 01:29:39,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-07 01:29:39,596 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 01:29:39,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:29:39,645 INFO L225 Difference]: With dead ends: 16497 [2021-11-07 01:29:39,645 INFO L226 Difference]: Without dead ends: 15972 [2021-11-07 01:29:39,646 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 584 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=263, Invalid=2389, Unknown=0, NotChecked=0, Total=2652 [2021-11-07 01:29:39,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15972 states. [2021-11-07 01:29:39,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15972 to 12312. [2021-11-07 01:29:39,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12312 states, 12311 states have (on average 4.084396068556575) internal successors, (50283), 12311 states have internal predecessors, (50283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:39,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12312 states to 12312 states and 50283 transitions. [2021-11-07 01:29:39,998 INFO L78 Accepts]: Start accepts. Automaton has 12312 states and 50283 transitions. Word has length 63 [2021-11-07 01:29:39,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:29:39,999 INFO L470 AbstractCegarLoop]: Abstraction has 12312 states and 50283 transitions. [2021-11-07 01:29:39,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:39,999 INFO L276 IsEmpty]: Start isEmpty. Operand 12312 states and 50283 transitions. [2021-11-07 01:29:40,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 01:29:40,024 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:29:40,025 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:29:40,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-11-07 01:29:40,025 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATION, thread1Err5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION (and 7 more)] === [2021-11-07 01:29:40,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:29:40,026 INFO L85 PathProgramCache]: Analyzing trace with hash -443314463, now seen corresponding path program 45 times [2021-11-07 01:29:40,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:29:40,026 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150308407] [2021-11-07 01:29:40,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:29:40,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:29:40,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:29:40,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:29:40,521 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:29:40,521 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150308407] [2021-11-07 01:29:40,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150308407] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:29:40,521 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:29:40,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-07 01:29:40,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378703153] [2021-11-07 01:29:40,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-07 01:29:40,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:29:40,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-07 01:29:40,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-11-07 01:29:40,522 INFO L87 Difference]: Start difference. First operand 12312 states and 50283 transitions. Second operand has 19 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:41,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:29:41,848 INFO L93 Difference]: Finished difference Result 16421 states and 65656 transitions. [2021-11-07 01:29:41,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-07 01:29:41,848 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 01:29:41,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:29:41,892 INFO L225 Difference]: With dead ends: 16421 [2021-11-07 01:29:41,892 INFO L226 Difference]: Without dead ends: 16204 [2021-11-07 01:29:41,892 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=175, Invalid=1805, Unknown=0, NotChecked=0, Total=1980 [2021-11-07 01:29:41,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16204 states. [2021-11-07 01:29:42,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16204 to 12372. [2021-11-07 01:29:42,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12372 states, 12371 states have (on average 4.084956753698165) internal successors, (50535), 12371 states have internal predecessors, (50535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:42,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12372 states to 12372 states and 50535 transitions. [2021-11-07 01:29:42,242 INFO L78 Accepts]: Start accepts. Automaton has 12372 states and 50535 transitions. Word has length 63 [2021-11-07 01:29:42,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:29:42,242 INFO L470 AbstractCegarLoop]: Abstraction has 12372 states and 50535 transitions. [2021-11-07 01:29:42,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:42,242 INFO L276 IsEmpty]: Start isEmpty. Operand 12372 states and 50535 transitions. [2021-11-07 01:29:42,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 01:29:42,268 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:29:42,268 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:29:42,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-11-07 01:29:42,269 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATION, thread1Err5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION (and 7 more)] === [2021-11-07 01:29:42,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:29:42,269 INFO L85 PathProgramCache]: Analyzing trace with hash 976433285, now seen corresponding path program 46 times [2021-11-07 01:29:42,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:29:42,269 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548163619] [2021-11-07 01:29:42,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:29:42,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:29:42,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:29:42,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:29:42,855 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:29:42,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548163619] [2021-11-07 01:29:42,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548163619] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:29:42,855 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:29:42,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-07 01:29:42,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800683831] [2021-11-07 01:29:42,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-07 01:29:42,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:29:42,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-07 01:29:42,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=455, Unknown=0, NotChecked=0, Total=506 [2021-11-07 01:29:42,856 INFO L87 Difference]: Start difference. First operand 12372 states and 50535 transitions. Second operand has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:45,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:29:45,505 INFO L93 Difference]: Finished difference Result 18841 states and 75321 transitions. [2021-11-07 01:29:45,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-11-07 01:29:45,506 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 01:29:45,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:29:45,565 INFO L225 Difference]: With dead ends: 18841 [2021-11-07 01:29:45,565 INFO L226 Difference]: Without dead ends: 18540 [2021-11-07 01:29:45,566 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1591 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=467, Invalid=5083, Unknown=0, NotChecked=0, Total=5550 [2021-11-07 01:29:45,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18540 states. [2021-11-07 01:29:45,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18540 to 12424. [2021-11-07 01:29:45,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12424 states, 12423 states have (on average 4.0842791596232795) internal successors, (50739), 12423 states have internal predecessors, (50739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:45,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12424 states to 12424 states and 50739 transitions. [2021-11-07 01:29:45,942 INFO L78 Accepts]: Start accepts. Automaton has 12424 states and 50739 transitions. Word has length 63 [2021-11-07 01:29:45,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:29:45,942 INFO L470 AbstractCegarLoop]: Abstraction has 12424 states and 50739 transitions. [2021-11-07 01:29:45,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:45,942 INFO L276 IsEmpty]: Start isEmpty. Operand 12424 states and 50739 transitions. [2021-11-07 01:29:45,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 01:29:45,969 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:29:45,969 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:29:45,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-11-07 01:29:45,969 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATION, thread1Err5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION (and 7 more)] === [2021-11-07 01:29:45,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:29:45,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1540786993, now seen corresponding path program 47 times [2021-11-07 01:29:45,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:29:45,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997702195] [2021-11-07 01:29:45,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:29:45,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:29:46,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:29:46,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:29:46,502 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:29:46,502 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997702195] [2021-11-07 01:29:46,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997702195] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:29:46,502 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:29:46,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-07 01:29:46,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680353928] [2021-11-07 01:29:46,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-07 01:29:46,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:29:46,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-07 01:29:46,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2021-11-07 01:29:46,504 INFO L87 Difference]: Start difference. First operand 12424 states and 50739 transitions. Second operand has 19 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:47,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:29:47,999 INFO L93 Difference]: Finished difference Result 16617 states and 66378 transitions. [2021-11-07 01:29:47,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-07 01:29:48,003 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 01:29:48,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:29:48,055 INFO L225 Difference]: With dead ends: 16617 [2021-11-07 01:29:48,055 INFO L226 Difference]: Without dead ends: 16216 [2021-11-07 01:29:48,055 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=182, Invalid=1798, Unknown=0, NotChecked=0, Total=1980 [2021-11-07 01:29:48,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16216 states. [2021-11-07 01:29:48,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16216 to 12404. [2021-11-07 01:29:48,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12404 states, 12403 states have (on average 4.083770055631702) internal successors, (50651), 12403 states have internal predecessors, (50651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:48,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12404 states to 12404 states and 50651 transitions. [2021-11-07 01:29:48,425 INFO L78 Accepts]: Start accepts. Automaton has 12404 states and 50651 transitions. Word has length 63 [2021-11-07 01:29:48,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:29:48,425 INFO L470 AbstractCegarLoop]: Abstraction has 12404 states and 50651 transitions. [2021-11-07 01:29:48,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:48,425 INFO L276 IsEmpty]: Start isEmpty. Operand 12404 states and 50651 transitions. [2021-11-07 01:29:48,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 01:29:48,450 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:29:48,450 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:29:48,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-11-07 01:29:48,450 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATION, thread1Err5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION (and 7 more)] === [2021-11-07 01:29:48,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:29:48,451 INFO L85 PathProgramCache]: Analyzing trace with hash 375694387, now seen corresponding path program 48 times [2021-11-07 01:29:48,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:29:48,451 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103699129] [2021-11-07 01:29:48,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:29:48,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:29:48,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:29:48,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:29:48,958 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:29:48,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103699129] [2021-11-07 01:29:48,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103699129] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:29:48,959 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:29:48,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-07 01:29:48,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382562807] [2021-11-07 01:29:48,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-07 01:29:48,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:29:48,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-07 01:29:48,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-11-07 01:29:48,960 INFO L87 Difference]: Start difference. First operand 12404 states and 50651 transitions. Second operand has 19 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:50,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:29:50,423 INFO L93 Difference]: Finished difference Result 17293 states and 68429 transitions. [2021-11-07 01:29:50,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-07 01:29:50,423 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 01:29:50,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:29:50,474 INFO L225 Difference]: With dead ends: 17293 [2021-11-07 01:29:50,475 INFO L226 Difference]: Without dead ends: 17076 [2021-11-07 01:29:50,475 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=191, Invalid=1971, Unknown=0, NotChecked=0, Total=2162 [2021-11-07 01:29:50,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17076 states. [2021-11-07 01:29:50,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17076 to 12412. [2021-11-07 01:29:50,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12412 states, 12411 states have (on average 4.084038353073886) internal successors, (50687), 12411 states have internal predecessors, (50687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:50,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12412 states to 12412 states and 50687 transitions. [2021-11-07 01:29:50,840 INFO L78 Accepts]: Start accepts. Automaton has 12412 states and 50687 transitions. Word has length 63 [2021-11-07 01:29:50,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:29:50,840 INFO L470 AbstractCegarLoop]: Abstraction has 12412 states and 50687 transitions. [2021-11-07 01:29:50,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:50,841 INFO L276 IsEmpty]: Start isEmpty. Operand 12412 states and 50687 transitions. [2021-11-07 01:29:50,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 01:29:50,868 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:29:50,868 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:29:50,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-11-07 01:29:50,869 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATION, thread1Err5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION (and 7 more)] === [2021-11-07 01:29:50,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:29:50,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1795442135, now seen corresponding path program 49 times [2021-11-07 01:29:50,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:29:50,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176116343] [2021-11-07 01:29:50,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:29:50,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:29:50,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:29:51,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:29:51,552 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:29:51,552 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176116343] [2021-11-07 01:29:51,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176116343] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:29:51,552 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:29:51,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-07 01:29:51,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237809783] [2021-11-07 01:29:51,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-07 01:29:51,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:29:51,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-07 01:29:51,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=455, Unknown=0, NotChecked=0, Total=506 [2021-11-07 01:29:51,553 INFO L87 Difference]: Start difference. First operand 12412 states and 50687 transitions. Second operand has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:54,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:29:54,738 INFO L93 Difference]: Finished difference Result 20073 states and 80182 transitions. [2021-11-07 01:29:54,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-11-07 01:29:54,738 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 01:29:54,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:29:54,799 INFO L225 Difference]: With dead ends: 20073 [2021-11-07 01:29:54,799 INFO L226 Difference]: Without dead ends: 19772 [2021-11-07 01:29:54,800 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2550 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=627, Invalid=7383, Unknown=0, NotChecked=0, Total=8010 [2021-11-07 01:29:54,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19772 states. [2021-11-07 01:29:55,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19772 to 12420. [2021-11-07 01:29:55,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12420 states, 12419 states have (on average 4.083662130606329) internal successors, (50715), 12419 states have internal predecessors, (50715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:55,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12420 states to 12420 states and 50715 transitions. [2021-11-07 01:29:55,191 INFO L78 Accepts]: Start accepts. Automaton has 12420 states and 50715 transitions. Word has length 63 [2021-11-07 01:29:55,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:29:55,191 INFO L470 AbstractCegarLoop]: Abstraction has 12420 states and 50715 transitions. [2021-11-07 01:29:55,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:55,192 INFO L276 IsEmpty]: Start isEmpty. Operand 12420 states and 50715 transitions. [2021-11-07 01:29:55,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 01:29:55,217 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:29:55,217 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:29:55,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-11-07 01:29:55,218 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATION, thread1Err5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION (and 7 more)] === [2021-11-07 01:29:55,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:29:55,218 INFO L85 PathProgramCache]: Analyzing trace with hash -782816049, now seen corresponding path program 50 times [2021-11-07 01:29:55,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:29:55,218 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544204553] [2021-11-07 01:29:55,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:29:55,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:29:55,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:29:55,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:29:55,781 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:29:55,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544204553] [2021-11-07 01:29:55,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544204553] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:29:55,781 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:29:55,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-07 01:29:55,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453881933] [2021-11-07 01:29:55,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-07 01:29:55,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:29:55,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-07 01:29:55,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-11-07 01:29:55,783 INFO L87 Difference]: Start difference. First operand 12420 states and 50715 transitions. Second operand has 19 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:57,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:29:57,483 INFO L93 Difference]: Finished difference Result 17439 states and 69753 transitions. [2021-11-07 01:29:57,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-07 01:29:57,484 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 01:29:57,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:29:57,536 INFO L225 Difference]: With dead ends: 17439 [2021-11-07 01:29:57,537 INFO L226 Difference]: Without dead ends: 17222 [2021-11-07 01:29:57,537 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 388 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=197, Invalid=2059, Unknown=0, NotChecked=0, Total=2256 [2021-11-07 01:29:57,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17222 states. [2021-11-07 01:29:57,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17222 to 12428. [2021-11-07 01:29:57,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12428 states, 12427 states have (on average 4.082642632976583) internal successors, (50735), 12427 states have internal predecessors, (50735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:57,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12428 states to 12428 states and 50735 transitions. [2021-11-07 01:29:57,894 INFO L78 Accepts]: Start accepts. Automaton has 12428 states and 50735 transitions. Word has length 63 [2021-11-07 01:29:57,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:29:57,894 INFO L470 AbstractCegarLoop]: Abstraction has 12428 states and 50735 transitions. [2021-11-07 01:29:57,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:57,894 INFO L276 IsEmpty]: Start isEmpty. Operand 12428 states and 50735 transitions. [2021-11-07 01:29:57,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 01:29:57,920 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:29:57,920 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:29:57,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-11-07 01:29:57,920 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATION, thread1Err5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION (and 7 more)] === [2021-11-07 01:29:57,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:29:57,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1281536829, now seen corresponding path program 51 times [2021-11-07 01:29:57,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:29:57,921 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193470965] [2021-11-07 01:29:57,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:29:57,921 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:29:57,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:29:58,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:29:58,650 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:29:58,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193470965] [2021-11-07 01:29:58,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193470965] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:29:58,650 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:29:58,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-07 01:29:58,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890416817] [2021-11-07 01:29:58,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-07 01:29:58,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:29:58,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-07 01:29:58,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=376, Unknown=0, NotChecked=0, Total=420 [2021-11-07 01:29:58,651 INFO L87 Difference]: Start difference. First operand 12428 states and 50735 transitions. Second operand has 21 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:30:01,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:30:01,793 INFO L93 Difference]: Finished difference Result 18157 states and 73500 transitions. [2021-11-07 01:30:01,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-11-07 01:30:01,793 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 01:30:01,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:30:01,865 INFO L225 Difference]: With dead ends: 18157 [2021-11-07 01:30:01,865 INFO L226 Difference]: Without dead ends: 17928 [2021-11-07 01:30:01,865 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 918 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=345, Invalid=3437, Unknown=0, NotChecked=0, Total=3782 [2021-11-07 01:30:01,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17928 states. [2021-11-07 01:30:02,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17928 to 12452. [2021-11-07 01:30:02,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12452 states, 12451 states have (on average 4.082162075335314) internal successors, (50827), 12451 states have internal predecessors, (50827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:30:02,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12452 states to 12452 states and 50827 transitions. [2021-11-07 01:30:02,248 INFO L78 Accepts]: Start accepts. Automaton has 12452 states and 50827 transitions. Word has length 63 [2021-11-07 01:30:02,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:30:02,248 INFO L470 AbstractCegarLoop]: Abstraction has 12452 states and 50827 transitions. [2021-11-07 01:30:02,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:30:02,249 INFO L276 IsEmpty]: Start isEmpty. Operand 12452 states and 50827 transitions. [2021-11-07 01:30:02,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 01:30:02,274 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:30:02,274 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:30:02,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-11-07 01:30:02,274 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATION, thread1Err5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION (and 7 more)] === [2021-11-07 01:30:02,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:30:02,274 INFO L85 PathProgramCache]: Analyzing trace with hash -8186741, now seen corresponding path program 52 times [2021-11-07 01:30:02,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:30:02,274 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231321699] [2021-11-07 01:30:02,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:30:02,275 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:30:02,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:30:02,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:30:02,881 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:30:02,881 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231321699] [2021-11-07 01:30:02,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231321699] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:30:02,881 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:30:02,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-07 01:30:02,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240326849] [2021-11-07 01:30:02,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-07 01:30:02,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:30:02,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-07 01:30:02,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=455, Unknown=0, NotChecked=0, Total=506 [2021-11-07 01:30:02,883 INFO L87 Difference]: Start difference. First operand 12452 states and 50827 transitions. Second operand has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:30:06,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:30:06,187 INFO L93 Difference]: Finished difference Result 19821 states and 78956 transitions. [2021-11-07 01:30:06,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-11-07 01:30:06,188 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 01:30:06,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:30:06,247 INFO L225 Difference]: With dead ends: 19821 [2021-11-07 01:30:06,247 INFO L226 Difference]: Without dead ends: 19540 [2021-11-07 01:30:06,248 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2548 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=638, Invalid=7372, Unknown=0, NotChecked=0, Total=8010 [2021-11-07 01:30:06,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19540 states. [2021-11-07 01:30:06,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19540 to 12668. [2021-11-07 01:30:06,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12668 states, 12667 states have (on average 4.087392437041131) internal successors, (51775), 12667 states have internal predecessors, (51775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:30:06,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12668 states to 12668 states and 51775 transitions. [2021-11-07 01:30:06,641 INFO L78 Accepts]: Start accepts. Automaton has 12668 states and 51775 transitions. Word has length 63 [2021-11-07 01:30:06,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:30:06,641 INFO L470 AbstractCegarLoop]: Abstraction has 12668 states and 51775 transitions. [2021-11-07 01:30:06,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:30:06,641 INFO L276 IsEmpty]: Start isEmpty. Operand 12668 states and 51775 transitions. [2021-11-07 01:30:06,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 01:30:06,667 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:30:06,667 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:30:06,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-11-07 01:30:06,668 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATION, thread1Err5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION (and 7 more)] === [2021-11-07 01:30:06,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:30:06,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1803917477, now seen corresponding path program 53 times [2021-11-07 01:30:06,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:30:06,668 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351958160] [2021-11-07 01:30:06,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:30:06,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:30:06,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:30:07,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:30:07,417 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:30:07,417 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351958160] [2021-11-07 01:30:07,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351958160] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:30:07,417 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:30:07,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-07 01:30:07,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038217483] [2021-11-07 01:30:07,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-07 01:30:07,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:30:07,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-07 01:30:07,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=456, Unknown=0, NotChecked=0, Total=506 [2021-11-07 01:30:07,419 INFO L87 Difference]: Start difference. First operand 12668 states and 51775 transitions. Second operand has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:30:10,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:30:10,395 INFO L93 Difference]: Finished difference Result 17853 states and 71946 transitions. [2021-11-07 01:30:10,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-11-07 01:30:10,396 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 01:30:10,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:30:10,453 INFO L225 Difference]: With dead ends: 17853 [2021-11-07 01:30:10,453 INFO L226 Difference]: Without dead ends: 17584 [2021-11-07 01:30:10,453 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 926 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=358, Invalid=3674, Unknown=0, NotChecked=0, Total=4032 [2021-11-07 01:30:10,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17584 states. [2021-11-07 01:30:10,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17584 to 12660. [2021-11-07 01:30:10,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12660 states, 12659 states have (on average 4.087763646417568) internal successors, (51747), 12659 states have internal predecessors, (51747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:30:10,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12660 states to 12660 states and 51747 transitions. [2021-11-07 01:30:10,825 INFO L78 Accepts]: Start accepts. Automaton has 12660 states and 51747 transitions. Word has length 63 [2021-11-07 01:30:10,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:30:10,825 INFO L470 AbstractCegarLoop]: Abstraction has 12660 states and 51747 transitions. [2021-11-07 01:30:10,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:30:10,826 INFO L276 IsEmpty]: Start isEmpty. Operand 12660 states and 51747 transitions. [2021-11-07 01:30:10,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 01:30:10,850 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:30:10,851 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:30:10,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-11-07 01:30:10,851 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATION, thread1Err5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION (and 7 more)] === [2021-11-07 01:30:10,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:30:10,851 INFO L85 PathProgramCache]: Analyzing trace with hash 387612029, now seen corresponding path program 54 times [2021-11-07 01:30:10,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:30:10,851 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75749062] [2021-11-07 01:30:10,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:30:10,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:30:10,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:30:11,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:30:11,408 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:30:11,409 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75749062] [2021-11-07 01:30:11,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75749062] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:30:11,409 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:30:11,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-07 01:30:11,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739795973] [2021-11-07 01:30:11,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-07 01:30:11,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:30:11,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-07 01:30:11,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2021-11-07 01:30:11,410 INFO L87 Difference]: Start difference. First operand 12660 states and 51747 transitions. Second operand has 21 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:30:13,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:30:13,809 INFO L93 Difference]: Finished difference Result 17839 states and 71316 transitions. [2021-11-07 01:30:13,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-07 01:30:13,810 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 01:30:13,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:30:13,867 INFO L225 Difference]: With dead ends: 17839 [2021-11-07 01:30:13,867 INFO L226 Difference]: Without dead ends: 17458 [2021-11-07 01:30:13,867 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 720 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=315, Invalid=3107, Unknown=0, NotChecked=0, Total=3422 [2021-11-07 01:30:13,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17458 states. [2021-11-07 01:30:14,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17458 to 12700. [2021-11-07 01:30:14,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12700 states, 12699 states have (on average 4.0844948421135525) internal successors, (51869), 12699 states have internal predecessors, (51869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:30:14,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12700 states to 12700 states and 51869 transitions. [2021-11-07 01:30:14,241 INFO L78 Accepts]: Start accepts. Automaton has 12700 states and 51869 transitions. Word has length 63 [2021-11-07 01:30:14,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:30:14,241 INFO L470 AbstractCegarLoop]: Abstraction has 12700 states and 51869 transitions. [2021-11-07 01:30:14,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:30:14,241 INFO L276 IsEmpty]: Start isEmpty. Operand 12700 states and 51869 transitions. [2021-11-07 01:30:14,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 01:30:14,266 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:30:14,267 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:30:14,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-11-07 01:30:14,267 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATION, thread1Err5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION (and 7 more)] === [2021-11-07 01:30:14,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:30:14,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1583235019, now seen corresponding path program 55 times [2021-11-07 01:30:14,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:30:14,268 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581344876] [2021-11-07 01:30:14,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:30:14,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:30:14,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:30:14,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:30:14,759 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:30:14,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581344876] [2021-11-07 01:30:14,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581344876] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:30:14,760 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:30:14,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-07 01:30:14,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224968835] [2021-11-07 01:30:14,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-07 01:30:14,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:30:14,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-07 01:30:14,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-11-07 01:30:14,761 INFO L87 Difference]: Start difference. First operand 12700 states and 51869 transitions. Second operand has 19 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:30:16,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:30:16,181 INFO L93 Difference]: Finished difference Result 17103 states and 67990 transitions. [2021-11-07 01:30:16,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-07 01:30:16,181 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 01:30:16,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:30:16,232 INFO L225 Difference]: With dead ends: 17103 [2021-11-07 01:30:16,233 INFO L226 Difference]: Without dead ends: 16822 [2021-11-07 01:30:16,233 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=193, Invalid=1969, Unknown=0, NotChecked=0, Total=2162 [2021-11-07 01:30:16,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16822 states. [2021-11-07 01:30:16,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16822 to 12700. [2021-11-07 01:30:16,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12700 states, 12699 states have (on average 4.0844948421135525) internal successors, (51869), 12699 states have internal predecessors, (51869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:30:16,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12700 states to 12700 states and 51869 transitions. [2021-11-07 01:30:16,601 INFO L78 Accepts]: Start accepts. Automaton has 12700 states and 51869 transitions. Word has length 63 [2021-11-07 01:30:16,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:30:16,601 INFO L470 AbstractCegarLoop]: Abstraction has 12700 states and 51869 transitions. [2021-11-07 01:30:16,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:30:16,601 INFO L276 IsEmpty]: Start isEmpty. Operand 12700 states and 51869 transitions. [2021-11-07 01:30:16,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 01:30:16,630 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:30:16,630 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:30:16,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-11-07 01:30:16,631 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATION, thread1Err5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION (and 7 more)] === [2021-11-07 01:30:16,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:30:16,631 INFO L85 PathProgramCache]: Analyzing trace with hash 905470003, now seen corresponding path program 56 times [2021-11-07 01:30:16,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:30:16,632 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294087679] [2021-11-07 01:30:16,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:30:16,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:30:16,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:30:17,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:30:17,171 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:30:17,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294087679] [2021-11-07 01:30:17,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294087679] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:30:17,171 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:30:17,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-07 01:30:17,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318521497] [2021-11-07 01:30:17,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-07 01:30:17,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:30:17,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-07 01:30:17,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-11-07 01:30:17,175 INFO L87 Difference]: Start difference. First operand 12700 states and 51869 transitions. Second operand has 19 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:30:18,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:30:18,588 INFO L93 Difference]: Finished difference Result 16821 states and 67114 transitions. [2021-11-07 01:30:18,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-07 01:30:18,589 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 01:30:18,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:30:18,639 INFO L225 Difference]: With dead ends: 16821 [2021-11-07 01:30:18,640 INFO L226 Difference]: Without dead ends: 16512 [2021-11-07 01:30:18,640 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=185, Invalid=1885, Unknown=0, NotChecked=0, Total=2070 [2021-11-07 01:30:18,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16512 states. [2021-11-07 01:30:18,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16512 to 12652. [2021-11-07 01:30:18,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12652 states, 12651 states have (on average 4.086870603114378) internal successors, (51703), 12651 states have internal predecessors, (51703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:30:19,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12652 states to 12652 states and 51703 transitions. [2021-11-07 01:30:19,002 INFO L78 Accepts]: Start accepts. Automaton has 12652 states and 51703 transitions. Word has length 63 [2021-11-07 01:30:19,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:30:19,003 INFO L470 AbstractCegarLoop]: Abstraction has 12652 states and 51703 transitions. [2021-11-07 01:30:19,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:30:19,003 INFO L276 IsEmpty]: Start isEmpty. Operand 12652 states and 51703 transitions. [2021-11-07 01:30:19,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 01:30:19,026 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:30:19,026 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:30:19,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-11-07 01:30:19,026 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATION, thread1Err5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION (and 7 more)] === [2021-11-07 01:30:19,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:30:19,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1454655169, now seen corresponding path program 57 times [2021-11-07 01:30:19,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:30:19,027 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754690436] [2021-11-07 01:30:19,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:30:19,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:30:19,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:30:19,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:30:19,578 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:30:19,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754690436] [2021-11-07 01:30:19,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754690436] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:30:19,579 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:30:19,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-07 01:30:19,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392060886] [2021-11-07 01:30:19,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-07 01:30:19,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:30:19,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-07 01:30:19,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=455, Unknown=0, NotChecked=0, Total=506 [2021-11-07 01:30:19,580 INFO L87 Difference]: Start difference. First operand 12652 states and 51703 transitions. Second operand has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:30:22,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:30:22,190 INFO L93 Difference]: Finished difference Result 18121 states and 72716 transitions. [2021-11-07 01:30:22,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-11-07 01:30:22,190 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 01:30:22,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:30:22,249 INFO L225 Difference]: With dead ends: 18121 [2021-11-07 01:30:22,249 INFO L226 Difference]: Without dead ends: 17904 [2021-11-07 01:30:22,250 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1662 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=480, Invalid=5220, Unknown=0, NotChecked=0, Total=5700 [2021-11-07 01:30:22,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17904 states. [2021-11-07 01:30:22,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17904 to 12668. [2021-11-07 01:30:22,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12668 states, 12667 states have (on average 4.087392437041131) internal successors, (51775), 12667 states have internal predecessors, (51775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:30:22,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12668 states to 12668 states and 51775 transitions. [2021-11-07 01:30:22,680 INFO L78 Accepts]: Start accepts. Automaton has 12668 states and 51775 transitions. Word has length 63 [2021-11-07 01:30:22,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:30:22,680 INFO L470 AbstractCegarLoop]: Abstraction has 12668 states and 51775 transitions. [2021-11-07 01:30:22,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:30:22,681 INFO L276 IsEmpty]: Start isEmpty. Operand 12668 states and 51775 transitions. [2021-11-07 01:30:22,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 01:30:22,708 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:30:22,709 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:30:22,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-11-07 01:30:22,709 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATION, thread1Err5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION (and 7 more)] === [2021-11-07 01:30:22,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:30:22,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1420564379, now seen corresponding path program 58 times [2021-11-07 01:30:22,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:30:22,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160373552] [2021-11-07 01:30:22,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:30:22,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:30:22,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:30:23,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:30:23,189 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:30:23,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160373552] [2021-11-07 01:30:23,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160373552] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:30:23,190 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:30:23,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-07 01:30:23,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399694880] [2021-11-07 01:30:23,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-07 01:30:23,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:30:23,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-07 01:30:23,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-11-07 01:30:23,191 INFO L87 Difference]: Start difference. First operand 12668 states and 51775 transitions. Second operand has 19 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:30:24,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:30:24,496 INFO L93 Difference]: Finished difference Result 16421 states and 65481 transitions. [2021-11-07 01:30:24,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-07 01:30:24,497 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 01:30:24,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:30:24,565 INFO L225 Difference]: With dead ends: 16421 [2021-11-07 01:30:24,565 INFO L226 Difference]: Without dead ends: 16120 [2021-11-07 01:30:24,565 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=170, Invalid=1722, Unknown=0, NotChecked=0, Total=1892 [2021-11-07 01:30:24,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16120 states. [2021-11-07 01:30:24,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16120 to 12704. [2021-11-07 01:30:24,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12704 states, 12703 states have (on average 4.085570337715501) internal successors, (51899), 12703 states have internal predecessors, (51899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:30:24,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12704 states to 12704 states and 51899 transitions. [2021-11-07 01:30:24,934 INFO L78 Accepts]: Start accepts. Automaton has 12704 states and 51899 transitions. Word has length 63 [2021-11-07 01:30:24,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:30:24,935 INFO L470 AbstractCegarLoop]: Abstraction has 12704 states and 51899 transitions. [2021-11-07 01:30:24,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:30:24,935 INFO L276 IsEmpty]: Start isEmpty. Operand 12704 states and 51899 transitions. [2021-11-07 01:30:24,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 01:30:24,959 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:30:24,959 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:30:24,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-11-07 01:30:24,960 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATION, thread1Err5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION (and 7 more)] === [2021-11-07 01:30:24,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:30:24,960 INFO L85 PathProgramCache]: Analyzing trace with hash 296144733, now seen corresponding path program 59 times [2021-11-07 01:30:24,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:30:24,960 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415757737] [2021-11-07 01:30:24,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:30:24,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:30:24,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:30:25,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:30:25,424 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:30:25,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415757737] [2021-11-07 01:30:25,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415757737] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:30:25,425 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:30:25,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-07 01:30:25,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738160024] [2021-11-07 01:30:25,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-07 01:30:25,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:30:25,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-07 01:30:25,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-11-07 01:30:25,426 INFO L87 Difference]: Start difference. First operand 12704 states and 51899 transitions. Second operand has 19 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:30:26,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:30:26,846 INFO L93 Difference]: Finished difference Result 16891 states and 67381 transitions. [2021-11-07 01:30:26,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-07 01:30:26,847 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 01:30:26,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:30:26,898 INFO L225 Difference]: With dead ends: 16891 [2021-11-07 01:30:26,898 INFO L226 Difference]: Without dead ends: 16666 [2021-11-07 01:30:26,898 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=184, Invalid=1886, Unknown=0, NotChecked=0, Total=2070 [2021-11-07 01:30:26,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16666 states. [2021-11-07 01:30:27,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16666 to 12696. [2021-11-07 01:30:27,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12696 states, 12695 states have (on average 4.085939346199291) internal successors, (51871), 12695 states have internal predecessors, (51871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:30:27,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12696 states to 12696 states and 51871 transitions. [2021-11-07 01:30:27,448 INFO L78 Accepts]: Start accepts. Automaton has 12696 states and 51871 transitions. Word has length 63 [2021-11-07 01:30:27,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:30:27,448 INFO L470 AbstractCegarLoop]: Abstraction has 12696 states and 51871 transitions. [2021-11-07 01:30:27,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:30:27,448 INFO L276 IsEmpty]: Start isEmpty. Operand 12696 states and 51871 transitions. [2021-11-07 01:30:27,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 01:30:27,474 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:30:27,474 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:30:27,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-11-07 01:30:27,474 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATION, thread1Err5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION (and 7 more)] === [2021-11-07 01:30:27,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:30:27,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1934469685, now seen corresponding path program 60 times [2021-11-07 01:30:27,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:30:27,477 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391460083] [2021-11-07 01:30:27,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:30:27,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:30:27,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:30:27,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:30:27,920 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:30:27,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391460083] [2021-11-07 01:30:27,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391460083] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:30:27,920 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:30:27,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-07 01:30:27,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322686001] [2021-11-07 01:30:27,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-07 01:30:27,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:30:27,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-07 01:30:27,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-11-07 01:30:27,921 INFO L87 Difference]: Start difference. First operand 12696 states and 51871 transitions. Second operand has 19 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:30:29,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:30:29,307 INFO L93 Difference]: Finished difference Result 16887 states and 67355 transitions. [2021-11-07 01:30:29,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-07 01:30:29,307 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 01:30:29,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:30:29,359 INFO L225 Difference]: With dead ends: 16887 [2021-11-07 01:30:29,359 INFO L226 Difference]: Without dead ends: 16658 [2021-11-07 01:30:29,359 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=194, Invalid=1968, Unknown=0, NotChecked=0, Total=2162 [2021-11-07 01:30:29,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16658 states. [2021-11-07 01:30:29,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16658 to 12696. [2021-11-07 01:30:29,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12696 states, 12695 states have (on average 4.0846790074832615) internal successors, (51855), 12695 states have internal predecessors, (51855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:30:29,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12696 states to 12696 states and 51855 transitions. [2021-11-07 01:30:29,890 INFO L78 Accepts]: Start accepts. Automaton has 12696 states and 51855 transitions. Word has length 63 [2021-11-07 01:30:29,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:30:29,890 INFO L470 AbstractCegarLoop]: Abstraction has 12696 states and 51855 transitions. [2021-11-07 01:30:29,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:30:29,890 INFO L276 IsEmpty]: Start isEmpty. Operand 12696 states and 51855 transitions. [2021-11-07 01:30:29,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 01:30:29,917 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:30:29,918 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:30:29,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-11-07 01:30:29,918 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATION, thread1Err5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION (and 7 more)] === [2021-11-07 01:30:29,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:30:29,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1070774041, now seen corresponding path program 61 times [2021-11-07 01:30:29,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:30:29,919 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243497660] [2021-11-07 01:30:29,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:30:29,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:30:29,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:30:30,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:30:30,347 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:30:30,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243497660] [2021-11-07 01:30:30,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243497660] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:30:30,347 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:30:30,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-07 01:30:30,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536954020] [2021-11-07 01:30:30,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-07 01:30:30,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:30:30,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-07 01:30:30,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-11-07 01:30:30,348 INFO L87 Difference]: Start difference. First operand 12696 states and 51855 transitions. Second operand has 19 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:30:31,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:30:31,857 INFO L93 Difference]: Finished difference Result 16655 states and 66114 transitions. [2021-11-07 01:30:31,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-07 01:30:31,858 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 01:30:31,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:30:31,915 INFO L225 Difference]: With dead ends: 16655 [2021-11-07 01:30:31,915 INFO L226 Difference]: Without dead ends: 16374 [2021-11-07 01:30:31,915 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=188, Invalid=1882, Unknown=0, NotChecked=0, Total=2070 [2021-11-07 01:30:31,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16374 states. [2021-11-07 01:30:32,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16374 to 12688. [2021-11-07 01:30:32,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12688 states, 12687 states have (on average 4.0856782533301805) internal successors, (51835), 12687 states have internal predecessors, (51835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:30:32,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12688 states to 12688 states and 51835 transitions. [2021-11-07 01:30:32,285 INFO L78 Accepts]: Start accepts. Automaton has 12688 states and 51835 transitions. Word has length 63 [2021-11-07 01:30:32,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:30:32,285 INFO L470 AbstractCegarLoop]: Abstraction has 12688 states and 51835 transitions. [2021-11-07 01:30:32,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:30:32,285 INFO L276 IsEmpty]: Start isEmpty. Operand 12688 states and 51835 transitions. [2021-11-07 01:30:32,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 01:30:32,312 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:30:32,313 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:30:32,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-11-07 01:30:32,313 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATION, thread1Err5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION (and 7 more)] === [2021-11-07 01:30:32,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:30:32,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1412089037, now seen corresponding path program 62 times [2021-11-07 01:30:32,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:30:32,313 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664639132] [2021-11-07 01:30:32,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:30:32,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:30:32,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:30:33,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:30:33,028 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:30:33,028 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664639132] [2021-11-07 01:30:33,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664639132] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:30:33,029 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:30:33,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-07 01:30:33,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912488207] [2021-11-07 01:30:33,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-07 01:30:33,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:30:33,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-07 01:30:33,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=454, Unknown=0, NotChecked=0, Total=506 [2021-11-07 01:30:33,030 INFO L87 Difference]: Start difference. First operand 12688 states and 51835 transitions. Second operand has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:30:35,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:30:35,997 INFO L93 Difference]: Finished difference Result 19427 states and 78194 transitions. [2021-11-07 01:30:35,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-11-07 01:30:35,998 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 01:30:35,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted.